1.A uniform cube is subjected to volume compression. If each side is decreased by 1%, then bulk strain is

a) 0.01

b) 0.06

c) 0.02

d) 0.03

Explanation:

2. A ball falling in a lake of depth 200 m shows 0.1% decrease in its volume at the bottom. What is the bulk modulus of the material of the ball

a) \[19.6\times 10^{8}N\diagup m^{2}\]

b) \[19.6\times 10^{-10}N\diagup m^{2}\]

c) \[19.6\times 10^{10}N\diagup m^{2}\]

d) \[19.6\times 10^{-8}N\diagup m^{2}\]

Explanation:

3.The isothermal bulk modulus of a gas at atmospheric pressure is

a) 1 mm of Hg

b) 13.6mm of Hg

c) \[1.013\times 10^{5}N\diagup m^{2}\]

d) \[2.026\times 10^{5}N\diagup m^{2}\]

Explanation:

4.Coefficient of isothermal elasticity \[E_{\theta}\] and coefficient of adiabatic elasticity \[E_{\phi}\] are related
by\[\left(\gamma=C_{p}\diagup C_{v}\right)\]

a) \[E_{\theta}=\gamma E_{\phi}\]

b) \[E_{\phi}=\gamma E_{\theta}\]

c) \[E_{\theta}=\gamma \diagup E_{\phi}\]

d) \[E_{\theta}=\gamma^{2} E_{\phi}\]

Explanation: \[E_{\phi}=\gamma E_{\theta}\]

5. The bulk modulus of an ideal gas at constant temperature

a) Is equal to its volume V

b) Is equal to p/2

c) Is equal to its pressure p

d) Can not be determined

Explanation: Isothermal bulk modulus = Pressure of gas

6. The Bulk modulus for an incompressible liquid is

a) Zero

b) Unity

c) Infinity

d) Between 0 to 1

Explanation: Infinity

7. The pressure applied from all directions on a cube is P. How much its temperature should be raised to maintain the original volume ? The volume
elasticity of the cube is \[\beta\] and the coefficient of volume expansion is \[\alpha\]

a) \[\frac{P}{\alpha\beta}\]

b) \[\frac{P\alpha}{\beta}\]

c) \[\frac{P\beta}{\alpha}\]

d) \[\frac{\alpha\beta}P{}\]

Explanation:

8. The pressure of a medium is changed from \[1.01\times 10^{5}Pa\] to \[1.165\times 10^{5}Pa\] and change in volume is
10% keeping temperature constant. The Bulk modulus of the medium is

a) \[204.8\times 10^{5}Pa\]

b) \[102.4\times 10^{5}Pa\]

c) \[51.2\times 10^{5}Pa\]

d) \[1.55\times 10^{5}Pa\]

Explanation:

9. Modulus of rigidity of diamond is

a) Too less

b) Greater than all matters

c) Less than all matters

d) Zero

Explanation: Greater than all matters

10. The ratio of lengths of two rods A and B of same material is 1 : 2 and the ratio of their radii is 2 : 1, then the ratio of modulus of rigidity of A and B
will be

a) 4 : 1

b) 16 : 1

c) 8 : 1

d) 1 : 1

Explanation: Modulus of rigidity is the property of material.