Refer to CBSE Class 11 Physics Mechanical Properties of Solids MCQs provided below. CBSE Class 11 Physics MCQs with answers available in Pdf for free download. The MCQ Questions for Class 11 Physics with answers have been prepared as per the latest syllabus, CBSE books and examination pattern suggested in Class 11 by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 9 Mechanical Properties of Solids are an important part of exams for Class 11 Physics and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 11 Physics and also download more latest study material for all subjects
MCQ for Class 11 Physics Chapter 9 Mechanical Properties of Solids
Class 11 Physics students should refer to the following multiple-choice questions with answers for Chapter 9 Mechanical Properties of Solids in Class 11. These MCQ questions with answers for Class 11 Physics will come in exams and help you to score good marks
Chapter 9 Mechanical Properties of Solids MCQ Questions Class 11 Physics with Answers
Question: If the length of a wire is reduced to half, then it can hold the
a) same load
b) one fourth load
c) half load
d) double load
Answer: same load
Question: The Young’s modulus of a perfectly rigid body is
a) infinity
b) some finite non-zero constant
c) zero
d) unity
Answer: infinity
Question: According to Hooke’s law of elasticity, if stress is increased, then the ratio of stress to strain
a) remains constant
b) increases
c) becomes zero
d) decreases
Answer: remains constant
Question: The restoring force per unit area is known as
a) stress
b) plasticity
c) elasticity
d) strain
Answer: stress
Question: In magnitude hydraulic stress is equal to
a) hydraulic pressure
b) hydraulic strain
c) hydraulic force
d) restoring force
Answer: hydraulic pressure
Question: Substances which can be stretched to cause large strains are called
a) elastomer
b) plastic
c) ductile
d) brittle
Answer: elastomer
Question: The reason for the change in shape of a regular body is
a) volume stress
b) shearing strain
c) longitudinal strain
d) metallic strain
Answer: volume stress
Question: Longidudinal stress depends on
a) area
b) length
c) volume
d) mass
Answer: area
Question: Which of the following affects the elasticity of a substance?
a) All of the above
b) Impurity in substance
c) Change in temperature
d) Hammering and annealing
Answer: All of the above
Question: If the load is increased beyond the _______ point, the strain increases rapidly for even a small change in the stress
a) yield point
b) fracture point
c) elastic point
d) plastic point
Answer: yield point
Question: Which of the following elastic moduli is used to describe the elastic behaviour of object as they respond to the deforming forces acting on them?
a) All of these
b) Shear modulus
c) Young's modulus
d) Bulk modulus
Answer: All of these
Question: Which of the following is the correct relation? Y = Young's modulus & G = modulus of rigidity?
a) Y > G
b) None of these
c) Y < G
d) Y = G
Answer: Y > G
Question: The ratio of shearing stress to the corresponding shearing strain is called
a) modulus of rigidity
b) bulk modulus
c) Young's modulus
d) None of these
Answer: modulus of rigidity
Question: The reciprocal of the bulk modulus is called
a) compressibility
b) volume stress
c) modulus of rigidity
d) volume strain
Answer: compressibility
Question: Which of the following statements is/are wrong?
I. Hollow shaft is much stronger than a solid rod of same length and same mass.
II. Reciprocal of bulk modulus of elasticity is called compressibility.
III. It is difficult to twist a long rod as compared to small rod.
a) III only
b) I only
c) II and III
d) I and II
Answer: III only
Question: Shearing strain is expressed by
a) angle of shear
b) decrease in volume
c) angle of twist
d) increase in volume
Answer: angle of shear
Question: A uniform cube is subjected to volume compression. If each side is decreased by 1%, then bulk strain is
a) 0.03
b) 0.02
c) 0.06
d) 0.01
Answer: 0.03
Question: Assertion : Identical springs of steel and copper are equally stretched. More work will be done on the steel spring
Reason : Steel is more elastic than copper.
a) Assertion is correct, reason is correct; reason is a correct explanation for assertion
b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
c) Assertion is correct, reason is incorrect
d) Assertion is incorrect, reason is correct
Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion
Question: The Poisson’s ratio of a material is 0.5. If a force is applied to a wire of this material, there is a decrease in the cross-sectional area by 4%. The percentage increase in the length is
a) 4%
b) 2.5%
c) 2%
d) 1%
Answer: 4%
Question: Modulus of rigidity of ideal liquids is
a) zero
b) infinity
c) unity
d) some finite small non-zero constant value
Answer: zero
Question: Beyond the critical speed, the flow of fluids becomes
a) turbulent
b) streamline
c) steady
d) very slow
Answer: turbulent
Question: Streamline flow is more likely for liquids with
a) low density and high viscosity
b) low density and high viscosity
c) high density and high viscosity
d) high density and high viscosity
Answer: low density and high viscosity
Question: For flow of a fluid to be turbulent
a) both
b) fluid should have high density
c) velocity should be large
d) None of these
Answer: both
Question: In Bernoulli’s theorem which of the following is conserved?
a) Energy
b) Mass
c) Linear momentum
d) Angular momentum
Answer: Energy
Question: A liquid is allowed to flow into a tube of truncated cone shape. Identify the correct statement from the following
a) the speed is low at the wider end and high at the narrow end.
b) the speed is high at the wider end and high at the narrow end
c) the speed is same at both ends in a stream line flow.
d) the liquid flows with uniform velocity in the tube.
Answer: the speed is low at the wider end and high at the narrow end.
Question: As the temperature of a liquid is raised, the coefficient of viscosity
a) decreases
b) increases
c) remains the same
d) may increase or decrease depending on the nature of liquid
Answer: decreases
Question: After terminal velocity is reached, the acceleration of a body falling through a fluid is
a) zero
b) equal to g
c) less than g
d) greater than g
Answer: zero
Question: Terminal velocity of ball depends on
a) density difference of liquid and ball
b) density of ball only
c) density of liquid only
d) area of the ball
Answer: density difference of liquid and ball
Question: Surface tension of a liquid is due to
a) cohesive force between molecules
b) adhesive force between molecules
c) electrical force between molecules
d) gravitational force between molecules
Answer: cohesive force between molecules
Question: If a soap bubble formed at the end of the tube is blown very slowly, then the graph between excess pressure inside the bubble with time will be a
a) parabolic curve sloping down
b) parabolic curve sloping up
c) straight line sloping down
d) straight line sloping up
Answer: parabolic curve sloping down
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CBSE Class 11 Physics Chapter 9 Mechanical Properties of Solids MCQs
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MCQs for Physics CBSE Class 11 Chapter 9 Mechanical Properties of Solids
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Chapter 9 Mechanical Properties of Solids MCQs Physics CBSE Class 11
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Chapter 9 Mechanical Properties of Solids CBSE Class 11 MCQs Physics
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CBSE MCQs Physics Class 11 Chapter 9 Mechanical Properties of Solids
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