CBSE Class 10 Physics Tungsten Assignment

1. Why tungsten is used exclusively for filaments of electric bulbs? 2. When you break a bar magnet in half, how many poles does each piece have? 3. Which of the compass-needle orientations in the figure below might correctly describe the magnet’s field at that point? 4.…

CBSE Class 10 Science Human Eye and Colorful World Assignment Set C

Question : Which of the following colors is least scattered by fog, dust of smoke? (a) Violet (b) Blue (c) Red (d) Yellow Answer :  C Question : Which of the following statements is correct regarding the propagation of light of different colors of white light in air…

CBSE Class 10 Physics Revision Assignment Set H

1. How does the frequency of a beam of light change when it goes from air to glass? 2. For light going from air to water , anw = 4/3. Then wna has value 3. Why sky appears black from spacecrafts? 4. The refractive index of Ruby is 1.76. What is the meaning of this statement…

CBSE Class 10 Physics Revision Assignment Set G

One mark questions   1. Define the term “electric current”. 2. Define the term ‘resistivity’ of a material. 3. How is a Voltmeter connected in the circuit to measure the potential difference between two points? 4. You have two metallic wires of resistances 6 ohm and…

CBSE Class 10 Physics Revision Assignment Set F

1. What is biomass? What can be done to obtain bio-energy using biomass? 2. What are the limitations in obtaining energy from wind? 3. Which is the process used to harness nuclear energy these days? 4. Explain the principle and working of a biogas plant using a labelled…

CBSE Class 10 Physics Revision Assignment Set E

(1) Given a resistor each of resistance R, how will you combine them to get the a) maximum & b) minimum effective resistance. & what is the ratio of the maximum to minimum resistance? (2) Two electric bulbs of 50 watt & 100 watt are given which one will brighter…

CBSE Class 10 Physics Revision Assignment Set D

1- What is the (a) highest (b) lowest total resistance, which can be secured by combinations of four coils of resistances 4W, 8 W, 12W and 24W?(48W, 0-5W) 2- When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the…

CBSE Class 10 Physics Revision Assignment Set C

  4) A man weighing 60kgs applies a force of 40N on a man weighing 40kgs. What is the force the man weighing 40kgs apply on the man weighing 60 kgs?   a)60 N b)40N c) will not apply any force d)cannot be determined.   5) How will the image formed…

CBSE Class 10 Physics Revision Assignment Set B

(ELECTRICITY) Types of electricity i. Static electricity ii. Current electricity Static Electricity: Static electricity is a type of electricity when electric charges develop but do not flow. For example charges developed by glass rod are rubbed with silk. Current…

CBSE Class 10 Physics Revision Assignment Set A

TOPIC- NON- CONVENTIONAL SOURCE OF ENERGY Solar Energy Solar energy • Light energy and heat energy from the sun are known as solar energy. • Sun has been radiating energy from the past 5 billion years and will continue to do so at the same rate for another 5 billion years or…

CBSE Class 10 Physics Question Bank

Short Answer Type Questions    Q.1. Will current flow more easily through a thick wire or a thin wire of the same material when connected to the same source? Why?   Q.2. A wire of uniform area of cross-section is stretched to four times its original length.…

CBSE Class 10 Science Light Reflection and Refraction Assignment Set C

Objective Questions Question : Match the following with the correct response:  (1) Refraction                  (A) Bending of light (2) Reflection                  (B) Velocity of…

CBSE Class 10 Science Light Reflection and Refraction Assignment Set E

Question. A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens (a) away from the screen (b) towards the screen (c) to a position very far away from the screen. (d) either towards…

CBSE Class 10 Physics Electricity Assignment Set A

MULTIPLE-CHOICE QUESTIONS Question. When electric current is passed, electrons move from: (a) high potential to low potential. (b) low potential to high potential. (c) in the direction of the current. (d) against the direction of the current. Answer. B Question.…

CBSE Class 10 Physics Electricity Assignment Set C

Question : Four different measuring instruments are shown below. Out of these, the instrument that can be used for measuring current is/are the instruments labelled as  (a) II and IV with IV more reliable of the two (b) II and III with II more reliable of the two (c…