GSEB Class 11 Economics Solutions Chapter 4 Supply

GSEB Solutions Class 11 Economics Chapter 4 Supply

Gujarat Board Textbook Solutions Class 11 Economics Chapter 4 Supply

GSEB Class 11 Economics Supply Text Book Questions And Answers

1. Choose Correct Option For The Following From The Options Provided :

 

Question 1.What are the changes that take place in supply due to decrease in the price of a commodity?
(A) Increase
(B) Expansion
(C) Contraction
(D) Decrease
Answer: (D) Decrease
In simple words: When the price of a good falls, producers are generally less willing to supply it, leading to a decrease in the overall quantity supplied.

🎯 Exam Tip: Understanding the direct relationship between price changes and the quantity supplied is crucial for explaining basic supply dynamics.

 

Question 2.What are the changes that take place in supply due to change in factors other than price?
(A) Increase
(B) Expansion
(C) Expansion-contraction
(D) Increase-decrease
Answer: (D) Increase-decrease
In simple words: When factors other than the price of the commodity (like technology, input costs, or government policies) change, the entire supply curve shifts, resulting in either an increase or a decrease in supply at every price level.

🎯 Exam Tip: Differentiating between movements along the supply curve (expansion/contraction due to price) and shifts of the supply curve (increase/decrease due to non-price factors) is a key concept.

 

Question 3.What is the relationship between price and supply of commodity?
(A) Direct
(B) Opposite
(C) Equal
(D) Zero
Answer: (A) Direct
In simple words: There is a direct relationship between price and supply, meaning that as the price of a commodity increases, its supply also tends to increase, and vice versa.

🎯 Exam Tip: The law of supply is foundational in economics, explaining how producers react to changes in market prices to maximize profit.

 

Question 4.What decreases, therefore profit decreases and due to that supply decreases?
(A) Stock
(B) Supply
(C) Price
(D) Price elasticity of demand
Answer: (C) Price
In simple words: A decrease in the market price of a commodity reduces the potential profit for producers, which then leads them to decrease the quantity they are willing to supply.

🎯 Exam Tip: Always link price changes directly to their impact on producer profits, as this is the primary driver for supply adjustments in a market economy.

 

Question 5.Stock is always ______ than supply.
(A) Higher
(B) Lower
(C) Not higher
(D) Negligible
Answer: (A) Higher
In simple words: Stock represents the total quantity of goods available with a producer, while supply is the portion of that stock offered for sale; thus, stock is generally greater than or equal to supply.

🎯 Exam Tip: Understand the distinction: stock is the total available quantity, and supply is what is actually put on the market, meaning stock sets the upper limit for supply.

 

Question 6.If there is expectation about rise in price in future then present supply _______.
(A) Increases
(B) Decreases
(C) Remain constant
(D) Become zero
Answer: (B) Decreases
In simple words: If producers anticipate higher prices in the future, they might reduce their current supply to hold back goods, aiming to sell them later at more favorable prices and maximize profits.

🎯 Exam Tip: Future expectations about price can significantly influence current supply decisions, often leading to a temporary reduction in supply if higher prices are foreseen.

 

2. Answer The Following Questions In One Sentence :

 

Question 1.What is stock?
Answer:Stock refers to the entire quantity of goods available with a producer, which can be offered for sale in the market according to the seller's ability and willingness.
In simple words: Stock is the total amount of a product a seller has on hand and is capable and ready to sell.

🎯 Exam Tip: Clearly defining key economic terms like 'stock' is essential; remember it's the total available quantity, not just what's currently being sold.

 

Question 2.Which are the two matters on, which law of supply is presented?
Answer:The law of supply is primarily based on price and other factors affecting supply.
In simple words: The law of supply mainly focuses on how supply changes with price, assuming other things remain constant.

🎯 Exam Tip: When discussing the law of supply, always acknowledge the "ceteris paribus" (all other things being equal) assumption, which isolates the effect of price.

 

Question 3.Define supply.
Answer:Supply is defined as the specific quantity of production that a producer is both able and willing to sell in the market at a given price and at a particular point in time.
In simple words: Supply is how much a producer is ready and capable of selling at a certain price at a specific moment.

🎯 Exam Tip: A precise definition of supply should always include both the "ability" and "willingness" of the producer, along with specific price and time parameters.

 

Question 4.What is supply schedule?
Answer:A supply schedule is a data table that illustrates a seller's willingness to offer a good at various prices in the market.
In simple words: A supply schedule is a table showing how many units of a product a seller will offer at different possible prices.

🎯 Exam Tip: Being able to construct and interpret a supply schedule is fundamental to understanding the graphical representation of a supply curve.

 

Question 5.How is the slope of supply curve?
Answer:The supply curve typically has a positive slope.
In simple words: The supply curve slopes upwards from left to right, showing that more is supplied at higher prices.

🎯 Exam Tip: A positively sloped supply curve is a direct graphical representation of the law of supply, indicating a direct relationship between price and quantity supplied.

 

Question 6.Why is the law of supply not applicable to rare articles?
Answer:The law of supply is not applicable to rare articles because such items usually do not have any current production, making their supply fixed and unresponsive to price changes.
In simple words: For rare items, there's no new production, so their supply can't increase even if prices go up.

🎯 Exam Tip: Remember exceptions to economic laws; for rare goods, the quantity is fixed, so the traditional supply-price relationship doesn't hold.

 

Question 7.Which types of commodities are an exception to the law of supply?
Answer:Rare goods and perishable goods are typically exceptions to the law of supply.
In simple words: Rare items have limited quantity, and perishable goods must be sold quickly, so their supply doesn't always follow price changes.

🎯 Exam Tip: While rare goods have fixed supply, perishable goods might see their supply dumped on the market regardless of price to avoid spoilage, making them special cases.

 

3. Answer The Following Questions In Short :

 

Question 1.Distinguish : Stock and Supply.
Answer:

Point	Stock	Supply
Meaning	Stock represents the total quantity of a commodity held in the seller's custody, acting as a potential supply.	Supply refers to the specific quantity of a commodity available for sale at a particular price, time, and location.
Dependence	Stock relies on the overall production of the commodity.	Supply is influenced by the available stock, market price, and the seller's willingness to sell.
Relationship	Stock can be equal to or greater than the quantity supplied.	Supply cannot exceed the total stock available; it can only be equal to or less than the stock.
Order of existence	Stock exists prior to supply.	Supply follows stock; without stock, there can be no supply.

In simple words: Stock is the total amount of goods a producer has, while supply is the part of that stock they choose to sell at a given time and price. Stock comes first and is always greater than or equal to supply.

🎯 Exam Tip: A clear, comparative table is excellent for distinguishing between related economic concepts like stock and supply, focusing on their definitions, determinants, and interrelationship.

 

Question 2.Explain meaning of individual supply and market supply.
Answer:In economics, supply can be categorized into two main types:
1. Individual supply: The supply of a good offered by a single firm or seller at a specific price and at a particular point in time is known as individual supply.
2. Market supply:

• Market supply is the total quantity supplied by all existing sellers in the market for a good at a given price and at a specific point in time.
• The following schedule illustrates the individual supply of apples by two different firms, Firm A and Firm B.
• The final column of the table represents the summation of individual supplies from Firm A and Firm B, which is termed market supply.

Price per kg in Rs.	Supply of apples of different firms (in kg)		Market supply of apples (in kg) i.e. combined supply of firms A and B
	Firm (A)	Firm (B)
10	80	60	140
20	180	100	280
30	240	180	420
40	300	260	560
50	400	300	700

• As the schedule demonstrates, higher prices generally correspond to higher supply, and lower prices to lower supply. This relationship is explained by the 'Law of Supply'.
• Based on these values, individual and market supply curves can be plotted. Due to the positive relationship between price and supply, these curves will exhibit a positive slope.

ℹ️ चित्र व्याख्या (Diagram Explanation): यह ग्राफ तीन अलग-अलग आपूर्ति वक्रों को दर्शाता है। पहला ग्राफ (शीर्ष) फर्म A की आपूर्ति वक्र को दिखाता है, जो कीमत (Y-अक्ष) और आपूर्ति की इकाइयों (X-अक्ष) के बीच सीधा संबंध दर्शाता है। दूसरा ग्राफ (मध्य) फर्म B की आपूर्ति वक्र को दर्शाता है, जिसमें भी कीमत बढ़ने पर आपूर्ति बढ़ती है। तीसरा ग्राफ (नीचे) इन दोनों फर्मों की व्यक्तिगत आपूर्ति को जोड़कर कुल बाजार आपूर्ति वक्र प्रस्तुत करता है, जो कुल बाजार में कीमत और आपूर्ति के बीच सकारात्मक संबंध को स्पष्ट करता है।
In simple words: Individual supply is what one seller offers, while market supply is the total offered by all sellers combined at different prices.

🎯 Exam Tip: When explaining market supply, always clarify that it's the horizontal summation of all individual supplies at each price level, and illustrate with a schedule and curve if possible.

 

Question 3.Why can supply be more than production, but can not be more than stock?
Answer:

• The supply of a commodity can be equal to or less than the total stock plus production, but it cannot exceed this combined amount.
• For instance, if a firm produces 100 units in a year and has 30 units from past stock, its total sellable stock becomes 130 units. The seller's maximum supply capability is limited to these 130 units.
• Therefore, while supply can be higher than current production (by utilizing existing stock), it can never surpass the total available stock.

In simple words: Supply can be greater than what is currently produced because it includes existing stock, but it can never be more than the total stock available (which includes both new production and old inventory).

🎯 Exam Tip: The critical distinction here is that "stock" includes both new production and existing inventory, setting the absolute upper limit for "supply."

 

Question 4.The supply curve is positively sloped. Explain with reasons.
Answer:

• According to the law of supply, as the price of a commodity increases, its supply expands, and as the price decreases, its supply contracts. This indicates a direct relationship between price and supply.
• When points illustrating a direct relationship between two variables are plotted on a graph, the resulting curve will move upwards from left to right, thus exhibiting a positive slope.
• Hence, the supply curve is inherently positively sloped due to this direct correlation.

In simple words: The supply curve slopes upwards because producers offer more goods when prices are high, seeking higher profits.

🎯 Exam Tip: To explain the positive slope effectively, always refer back to the profit motive of producers and the direct relationship between price and quantity supplied.

 

4. Answer The Following Questions In Brief Points :

 

Question 1.Write short note on supply function.
Answer:Supply function:

• The supply function mathematically expresses the relationship between the supply of a particular good and its various determinants, which are the factors influencing supply.
• It illustrates that the supply of a good is determined by a multitude of factors.

Mathematical form of the supply function:
\( S_x = f(P_x, T, P_f, P_o, U) \)
where \( S_x \) = Supply of commodity X
f = Functional notation
\( P_x \) = Price of commodity X
T = Level of technology
\( P_f \) = Factor prices
\( P_e \) = Expectations regarding future prices
U = Other factors
In simple words: A supply function is a formula that shows how the quantity of a good supplied depends on its own price, technology, input costs, future price expectations, and other relevant factors.

🎯 Exam Tip: When detailing the supply function, ensure you list and explain each variable, as this demonstrates a comprehensive understanding of supply determinants beyond just price.

 

Question 2.State exceptions to the law of supply.
Answer:Law of supply: "When all other factors affecting supply are assumed to be constant, as price increases, supply expands, and as price decreases, supply contracts." This definition highlights a direct and positive relationship between price and supply, which is known as the law of supply.
Assumptions of law of supply:

• While several factors influence the supply of a good over time, the law of supply assumes that at a given point, all non-price factors affecting supply remain constant.
• In reality, various factors other than price can significantly influence supply; however, for the law of supply to hold, these are assumed to be constant.

Some important assumptions of law of supply:

• Prices of factors of production remain constant.
• There is no change in technology.
• The level of competition, or the number of sellers in the market, remains unchanged.
• Expectations regarding future prices are ignored or held constant.
• Other factors, such as government policy, transport facilities, and natural factors, remain constant.

In simple words: The law of supply states that producers supply more when prices rise, assuming all other conditions stay the same. Its assumptions include stable production costs, no technological changes, and constant future price expectations.

🎯 Exam Tip: Clearly listing the assumptions of the law of supply is as important as stating the law itself, as these conditions define the scope of its applicability.

 

Question 3.Explain expansion-contraction of supply along with diagram.
Answer:Expansion-contraction of supply:

• When factors other than price are assumed to remain constant, and only the price of the commodity varies, there occurs an expansion or contraction of supply.
• These "other factors" can include changes in the cost of production inputs, the number of sellers, technological advancements, or government policies, among others.

Example:

• Let us consider an example to understand the concepts of expansion and contraction in supply.
• The following schedule illustrates the various prices of apples and the corresponding quantities supplied at those prices.

Price of apples per kg (in Rs.)	Supply of apples (in kg)
50	200
60	400
70	600
80	800
90	1000

ℹ️ चित्र व्याख्या (Diagram Explanation): यह ग्राफ सेब की आपूर्ति में विस्तार और संकुचन को दर्शाता है। Y-अक्ष पर वस्तु की कीमत (रुपये में) और X-अक्ष पर वस्तु की आपूर्ति (किलो में) दिखाई गई है। जैसे-जैसे कीमत 50 रुपये से 90 रुपये तक बढ़ती है, आपूर्ति 200 किलोग्राम से 1000 किलोग्राम तक बढ़ती है, जिसे 'a' से 'c' की ओर आपूर्ति वक्र SS पर ऊपर की ओर गति (विस्तार) के रूप में दर्शाया गया है। इसके विपरीत, कीमत घटने पर आपूर्ति घटती है, जिसे 'a' से 'b' की ओर नीचे की ओर गति (संकुचन) के रूप में दिखाया गया है।
Analysis: In the diagram, the price of apples is represented on the Y-axis, and their supply is shown on the X-axis. Suppose the initial price of apples is Rs. 70 per kg. At this price, the initial supply is 200 kg, which is plotted as point 'a' on the supply curve.
Expansion:

• As the schedule shows, when the price rises to Rs. 80, the supply expands to 800 kg. If the price further rises to Rs. 90, the supply expands to 1,000 kg, plotted as point 'c'.
• The movement from point 'a' to point 'c' along the supply curve SS is termed the expansion of supply.

Contraction:

• Conversely, from the initial point 'a', if the price falls to Rs. 60, the supply contracts to 400 kg. If the price further drops to Rs. 50, the supply contracts to 200 kg, plotted as point 'b' on the supply curve.
• The movement from point 'a' to point 'b' along the same supply curve SS is referred to as the contraction of supply.

In simple words: Expansion of supply occurs when quantity supplied increases due to a price rise, moving up the supply curve. Contraction occurs when quantity supplied decreases due to a price fall, moving down the same supply curve.

🎯 Exam Tip: When illustrating expansion and contraction, clearly label the price and quantity changes on both the schedule and the diagram, emphasizing that these are movements *along* a single supply curve.

 

Question 4.Explain increase-decrease of supply along with diagram.
Answer:Increase-decrease in supply: Assuming price remains constant, if the supply increases or decreases due to changes in factors other than price, this phenomenon is known as an increase or decrease in supply.
Rightward shift:

• When the price factor is held constant, if supply increases due to any other factor (e.g., lower production costs, improved technology, more suppliers, or favorable government policies), the entire supply curve shifts towards the right. This is called a rightward shift in the supply curve.
• Factors causing a rightward shift include a fall in production costs, lower prices for input factors, technological improvements, an increase in the number of suppliers, or favorable government policies.

Leftward shift:

• Conversely, if the price factor remains constant but supply decreases due to other factors, the supply curve will shift towards the left, known as a leftward shift in the supply curve.
• A leftward shift occurs when one or more of the factors mentioned above behave in a reverse manner (e.g., higher production costs, outdated technology, fewer suppliers, or unfavorable government policies).

Let us take an example to understand the increase and decrease in supply:

• The schedule (table) below provides data on the price of a commodity and its varying supply at that constant price.
• Note that the price of Rs. 20 remains constant across all observations. A supply curve is plotted for this data.

Price of apples (in Rs.)	Supply of apples (in kg)
20	100
20	200
20	300
20	400
20	500

ℹ️ चित्र व्याख्या (Diagram Explanation): यह ग्राफ आपूर्ति में वृद्धि और कमी को दर्शाता है, जहाँ वस्तु की कीमत (Y-अक्ष) स्थिर रहती है। प्रारंभिक आपूर्ति वक्र \(S_1S_1\) बिंदु 'a' पर 20 रुपये की कीमत पर 300 किलोग्राम सेब की आपूर्ति दिखाता है। जब गैर-मूल्य कारकों में बदलाव के कारण आपूर्ति बढ़ती है, तो वक्र \(S_3S_3\) पर दाईं ओर (बिंदु 'c' पर 400 किलोग्राम) खिसक जाता है। इसके विपरीत, जब गैर-मूल्य कारकों में प्रतिकूल परिवर्तन के कारण आपूर्ति घटती है, तो वक्र \(S_2S_2\) पर बाईं ओर (बिंदु 'b' पर 200 किलोग्राम) खिसक जाता है।
Increase in supply:

• When the price remains constant at Rs. 20, but other factors change favorably for apple supply (e.g., improved technology or lower input costs), the supply curve shifts to the right, from \(S_1S_1\) to \(S_3S_3\). This leads to an increase in apple supply to 400 kg, indicated by a rightward movement from point 'a' to point 'c' on \(S_3S_3\).

Decrease in supply:

• At the constant price of Rs. 20, if other factors change unfavorably for apple supply (e.g., increased production costs or new regulations), the supply curve shifts to the left, from \(S_1S_1\) to \(S_2S_2\). This results in a decrease in apple supply to 200 kg, illustrated by a leftward movement from point 'a' to point 'b' on \(S_2S_2\).

In simple words: An increase in supply means the supply curve shifts right, offering more at the same price due to non-price factors. A decrease in supply means the curve shifts left, offering less at the same price due to non-price factors.

🎯 Exam Tip: When explaining shifts in the supply curve, always highlight that the price of the good itself remains constant, and the shift is solely driven by changes in non-price determinants of supply.

 

5. Answer The Following Questions In Detail :

 

Question 1.Discuss in detail the factors affecting supply.
Answer:Factors that affect supply can be broadly categorized into two groups:
1. Price of the good (product) and
2. Factors other than price.
1. Price of the good (product):

• The price of a product is a crucial determinant of its supply.
• Producers aim to maximize profit. Therefore, they tend to supply more goods when the price of a product rises and less when it falls.
• Consequently, there is a positive relationship between a good's price and its supply.

2. Factors other than price:
(A) Price of factors of production cost of production: Changes in production costs directly impact supply.
Example:

• If the rent paid for land or wages paid to labor decrease, the overall cost of production declines.
• When production costs decrease and the product's price remains constant, profits increase. This encourages sellers to offer larger quantities, thus expanding supply when input prices fall.
• Conversely, if production costs rise, the situation reverses, and supply tends to contract.

(B) Level of technology:

• Technological advancements lead to savings in time and effort. This enables producers to create higher quantities of goods, often with improved quality, at the same or lower costs.
• If market prices do not fall, increased efficiency from technology boosts profits, making sellers willing to supply more. Hence, supply expands.

(C) Future expectations about price: If sellers anticipate a rise in a product's price in the future, they might reduce their current supply to build up stock, intending to sell it later at a higher price. Conversely, if a future price drop is expected, they might increase current supply. Thus, future price expectations significantly influence the current supply of goods.
(D) Other factors: Other factors that can increase supply include:

• An increase in the number of firms producing the product.
• Existence of political stability within the state.
• Favorable natural conditions for production.
• Presence of efficient law and order and robust legal systems.
• Well-maintained industrial relations between owners and workers involved in production and marketing activities.

Conversely, supply decreases when these factors become unfavorable.
In simple words: Supply is affected by the product's price (more supply at higher prices) and other factors like production costs, technology, future price expectations, number of firms, political stability, natural conditions, and legal systems.

🎯 Exam Tip: When detailing factors affecting supply, ensure you explain both the direct impact of price and the various non-price determinants, providing a brief example for each to demonstrate understanding.

 

Question 2.Explain law of supply in detail with the help of a schedule and diagram.
Answer:(A) Law of supply: "When all other factors affecting supply are assumed to be constant, as price increases, supply expands, and as price decreases, supply contracts." This definition illustrates a direct and positive relationship between the price of a good and its supply, which is referred to as the law of supply.
Assumptions of law of supply:

• While numerous factors influence the supply of a good over time, the law of supply assumes that at any given moment, the impact of all non-price factors on supply remains constant.
• In reality, various factors other than price can profoundly affect supply; however, for the law to hold, these are considered constant.

Some important assumptions of law of supply:

• Prices of factors of production (inputs) remain constant.
• There is no change in technology.
• The level of competition, specifically the number of sellers in the market, remains the same.
• Expectations regarding future prices are disregarded or held constant.
• Other external factors such as government policy, transport facilities, and natural conditions remain constant.

(B) Supply schedule: A supply schedule is a tabular representation of data that shows a seller's willingness to offer a good at various prices.
Example: The table below illustrates a seller's willingness to supply apples at different prices.

Price of apples per kg (in Rs.)	Supply of apples (in kg)
50	200
60	400
70	600
80	800
90	1000

ℹ️ चित्र व्याख्या (Diagram Explanation): यह ग्राफ आपूर्ति के नियम को दर्शाता है, जिसमें वस्तु की कीमत (Y-अक्ष) और आपूर्ति की इकाइयाँ (X-अक्ष) के बीच सीधा संबंध दिखाया गया है। जैसे-जैसे कीमत 50 रुपये से बढ़कर 90 रुपये होती है, आपूर्ति की गई मात्रा 200 किलोग्राम से बढ़कर 1000 किलोग्राम हो जाती है। यह संबंध आपूर्ति वक्र SS द्वारा दर्शाया गया है, जो बिंदु 'a' से 'e' तक ऊपर की ओर ढलान वाला है, जो यह बताता है कि उच्च कीमतों पर अधिक आपूर्ति की जाती है।
Analysis:

• In the diagram, the price of apples is depicted on the Y-axis, and the supply of apples is shown on the X-axis.
• By plotting these points on the graph, we obtain points a, b, c, d, and e. These points represent various price-supply combinations.
• As observed in the graph, when the price is Rs. 50, the supply is 200 kg; when the price rises to Rs. 60, the supply extends to 400 kg; and when the price further increases to Rs. 70, the supply extends to 600 kg, and so on.
• The curve SS, formed by connecting these points, is known as the supply curve. It exhibits a positive slope.

In simple words: The law of supply states that as price increases, quantity supplied also increases, assuming other factors are constant. A supply schedule tables this relationship, and a supply curve graphically shows it as an upward-sloping line.

🎯 Exam Tip: For a detailed explanation of the law of supply, always combine the definition, its underlying assumptions, a clear supply schedule, and an accurately drawn and labeled supply curve.

 

**Question 2.** Explain law of supply in detail with the help of a schedule and diagram.
Answer:(A) Law of supply: The "Law of Supply" states that when all other factors influencing supply are held constant, an increase in price leads to an expansion of supply, and a decrease in price results in a contraction of supply. This definition highlights a direct and positive correlation between a product's price and its supply. Assumptions of the law of supply: Several factors influence a good's supply at any given time. However, the law of supply assumes that at a specific moment, the impact of all factors affecting supply, other than price, remains constant. While other factors can indeed influence supply, for the purpose of this law, they are considered static. Some important assumptions for the law of supply include: * Production factor prices remain unchanged. * There are no technological advancements. * The level of market competition is constant, meaning the number of sellers in the market remains the same. * Expectations regarding future prices are disregarded or held constant. * Other external factors like government policies, transportation facilities, and natural conditions also remain constant. (B) Supply schedule: A supply schedule is a tabular representation illustrating a seller's willingness to offer a good at various prices. Example: The following table demonstrates a seller's willingness to sell apples at different prices.

Price per kg in Rs.	Supply of apples of different firms (in kg) Firm (A)	Firm (B)	Market supply of apples (in kg) i.e. combined supply of firms A and B
10	80	60	140
20	180	100	280
30	240	180	420
40	300	260	560
50	400	300	700

ℹ️ चित्र व्याख्या (Diagram Explanation): यह आरेख तीन अलग-अलग आपूर्ति वक्रों को दर्शाता है: फर्म A, फर्म B, और बाजार आपूर्ति वक्र। X-अक्ष पर 'आपूर्ति (इकाइयों में)' और Y-अक्ष पर 'कीमत (रु. में)' दर्शाई गई है। प्रत्येक वक्र व्यक्तिगत या कुल बाजार आपूर्ति के साथ कीमत के प्रत्यक्ष संबंध को दर्शाता है, जिसमें सभी वक्रों का ढलान सकारात्मक है, जो कीमत बढ़ने पर आपूर्ति में वृद्धि को इंगित करता है। Analysis: In the diagram provided, the Y-axis represents the price of apples, and the X-axis represents the quantity of apples supplied. By plotting the various price-supply combinations from the schedule, points labeled a, b, c, d, and e are obtained on the graph. The graph illustrates that as the price is Rs. 50, the supply is 200 kg; when the price increases to Rs. 60, the supply expands to 400 kg; and a further price increase to Rs. 70 leads to a supply expansion of 600 kg, and so on. The curve labeled SS, formed by connecting these points, is known as the supply curve, which invariably has a positive slope, reflecting the direct relationship between price and supply.In simple words: The law of supply states that as the price of a product increases, its supply also increases, and vice versa, assuming other factors remain constant. This is shown by a supply schedule (table) and a supply curve, which typically slopes upwards.

🎯 Exam Tip: When explaining the law of supply, ensure you clearly state the ceteris paribus assumption and accurately illustrate the direct relationship using both a schedule and a positively sloped supply curve for maximum scores.

 

**Question 3.** Explain the price determination process of market along with a diagram.
Answer:Process of price determination: Consumers often perceive that product prices are solely decided by producers or sellers. However, in reality, individual producers or sellers do not unilaterally determine prices. Prices are fundamentally established through the interplay of market demand and supply forces. According to the demand schedule, as prices rise, demand tends to decrease, while the supply schedule indicates that as prices increase, supply tends to expand. Consequently, the demand curve slopes downwards from left to right, whereas the supply curve slopes upwards from left to right. Equilibrium is achieved precisely at the point where these two curves intersect, as their movements are in opposing directions. This intersection point signifies the price equilibrium, and such an equilibrium price exists within the market for goods. Individual sellers adopt this equilibrium price as a guideline for setting prices for their specific products in the market. In situations of perfect competition, firms use this price as a benchmark; even in monopolies and oligopolies, market dynamics drive this price signal. A monopolist, too, must consider the total market demand and supply when determining prices. Example: The table below illustrates the demand and supply for a commodity at various prices, with an accompanying diagram showing their interaction. Marshall described market demand and market supply as the "invisible hands" of the market, signifying that this entire process of price determination is invisible. The two curves, representing demand and supply, form a cross pattern in the figure.

Price of a commodity (in Rs.)	Demand of commodity (in kg)	Supply of commodity (in kg)
10	1000	200
20	800	400
30	600	600
40	400	800
50	200	1000

ℹ️ चित्र व्याख्या (Diagram Explanation): यह आरेख एक वस्तु की मांग और आपूर्ति के बीच संतुलन मूल्य निर्धारण को दर्शाता है। X-अक्ष पर 'वस्तु की मांग और आपूर्ति (किलो में)' और Y-अक्ष पर 'वस्तु की कीमत (रु. में)' दर्शाई गई है। मांग वक्र (DD) नीचे की ओर ढलान वाला है, जबकि आपूर्ति वक्र (SS) ऊपर की ओर ढलान वाला है। बिंदु 'E' वह बिंदु है जहां ये दोनों वक्र प्रतिच्छेद करते हैं, जो संतुलन मूल्य (रु. 30) और संतुलन मात्रा (600 इकाइयाँ) को इंगित करता है, जिसे OQ द्वारा दर्शाया गया है। In the figure, the demand curve DD and the supply curve SS move in opposite directions, intersecting at point 'E', which is designated as the equilibrium point. At this equilibrium point, the equilibrium price is Rs. 30, which can be identified by plotting EQ. At this price, the quantity demanded and supplied, denoted by OQ, is 600 units. This is referred to as the equilibrium quantity. Case 1: If the industry increases its price to Rs. 40, disregarding the demand and supply schedules, the total demand would contract to 400 units from 600 units, while the supply would expand to 800 units. As demand is less than supply (indicated by the distance between points 'a' and 'c'), the market price would naturally tend to decrease back to Rs. 30. This phenomenon illustrates the market's equilibrating process. Case 2: Conversely, if the industry reduces the price to Rs. 20, ignoring the demand and supply schedules, the total demand would expand to 800 units while supply contracts to 400 units. Since demand exceeds supply (shown by the distance between points 'd' and 'b'), the market price would tend to rise back to Rs. 30. This also exemplifies the market's invisible adjustment process.In simple words: Market price is determined where the quantity consumers want to buy (demand) exactly matches the quantity producers want to sell (supply). This meeting point is called the equilibrium, and any temporary imbalances in price will naturally adjust back to this equilibrium.

🎯 Exam Tip: To effectively explain market price determination, clearly define demand and supply, show their interaction with a schedule and a diagram, and highlight the equilibrium point where the curves intersect. Demonstrate how the market self-corrects from imbalances (e.g., surplus or shortage) to return to equilibrium.