CBSE Class 11 Physics Chapter 9 Mechanical Properties of Solids Multiple Choice Questions with Answers. MCQ Questions Class 11 Physics Mechanical Properties of Solids with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 11 Physics Mechanical Properties of Solids MCQs with Answers to know their preparation level.
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MCQ Questions Class 11 Physics Mechanical Properties of Solids with Answers - Set - 5
Question 1:
The Young’s modulus of a perfectly rigid body is
(a) unity
(b) zero
(c) infinity
(d) some finite non-zero constant
Correct Answer – (C)
Question 2 :
When an elastic material with Young’s modulus Y is subjected to stretching stress S, elastic energy stored per unit volume of the material is
(a) YS / 2
(b) S2Y / 2
(c) S2 / 2Y
(d) S / 2Y
Correct Answer – (C)
Question 3 :
For a constant hydraulic stress on an object, the fractional change in the object volume (ΔV /V) and its bulk modulus (B) are related as
(a) ΔV /V ∝ B
(b) ΔV /V ∝ 1/B
(c) ΔV /V ∝ B2
(d) ΔV /V ∝ B–2
Correct Answer – (B)
Question 4 :
A steel ring of radius r and cross sectional area A is fitted onto a wooden disc of radius R (R > r). If the Young’s modulus of steel is Y, then the force with which the steel ring is expanded is
(a) A Y (R/r)
(b) A Y (R – r)/r
(c) (Y/A)[(R – r)/r]
(d) Y r/A R
Correct Answer – (B)
Question 5 :
Hooke’s law defines
(a) stress
(b) strain
(c) modulus of elasticity
(d) elastic limit
Correct Answer – (C)
MCQ Questions Class 11 Physics Mechanical Properties of Solids with Answers
Question 6 :
The ratio of shearing stress to the corresponding shearing strain is called
(a) bulk modulus
(b) Young’s modulus
(c) modulus of rigidity
(d) None of these
Correct Answer – (C)
Question 7 :
A steel wire is suspended vertically from a rigid support.
When loaded with a weight in air, it extends by la and when the weight is immersed completely in water, the extension is reduced to lw. Then the relative density of material of the weight is
(a) la /lw
(b) la / la – lw
(c) lw / la – lw
(d) lw – la
Correct Answer – (B)
Question 8 :
Which of the following relation is true ?
(a) 3Y = K(1- σ )
(b K = 9ηY /Y+η
(c) σ = (6K + η)Y
(d) σ = 0.5Y – η / η
Correct Answer – (D)
Question 9 :
In case of steel wire (or a metal wire), the limit is reached when
(a) the wire just break
(b) the load is more than the weight of wire
(c) elongation is inversely proportional to the tension
(d) None of these
Correct Answer – (D)
Question 10 :
A and B are two wires. The radius of A is twice that of B.
They are stretched by the same load. Then the stress on B is
(a) equal to that on A
(b) four times that on A
(c) two times that on A
(d) half that on A
Correct Answer – (B)
- NCERT Solutions Class 11 Physics Chapter 1 : Physical world
- NCERT Solutions Class 11 Physics Chapter 2 : Units And Measurements
- NCERT Solutions Class 11 Physics Chapter 3 : Motion In A Straight Line
- NCERT Solutions Class 11 Physics Chapter 4 : Motion In A Plane
- NCERT Solutions Class 11 Physics Chapter 5 : Laws of Motion
- NCERT Solutions Class 11 Physics Chapter 6 : Work Energy Power
- NCERT Solutions Class 11 Physics Chapter 7 : Rotational-Motion
- NCERT Solutions Class 11 Physics Chapter 8 : Gravitation
- NCERT Solutions Class 11 Physics Chapter 9 : Mechanical Properties of Solids
- NCERT Solutions Class 11 Physics Chapter 10 : Mechanical Properties of Fluids
- NCERT Solutions Class 11 Physics Chapter 11 : Thermal Properties of Matter
- NCERT Solutions Class 11 Physics Chapter 12 : Thermodynamics
- NCERT Solutions Class 11 Physics Chapter 13 : Kinetic Theory
- NCERT Solutions Class 11 Physics Chapter 14 : Oscillations
- NCERT Solutions Class 11 Physics Chapter 15 : Waves
