Elasticity

The dimension of stress is same as that of:

• Force

• Pressure

• Torque

• Work

The dimensional formula of modulus of elasticity is same as that of

• Stress

• Strain

• Velocity

• Surface tension

The bulk modulus of a perfectly rigid body is

• Zero

• 1

• Infinity

• None of above

The modulus of rigidity of a liquid is:

• zero

• 1

• Infinity

• None of above

Which of the modulus of elasticity is involved in compressing the rod to decrease its volume

• Young´s modulus

• Bulk modulus

• Modulus of rigidity

• None of above

The energy per unit volume of a stretched wire is

• 1/2 Stress X extension

• 1/2 Load X extension

• 1/2 Load X strain

• 1/2 Stress X strain

How does the youngs modulus vary with the increase in temperature?

• Increases

• Decreases

• Remains Constant

• First increases and then decreases

A wire is stretched to double its length. The strain is

• Zero

• 1

• 2

• 0.5

The Young's modulus is numerically equal to stress that arises inca wire when its length changes from L to:

• 1.25 L

• 1.50 L

• 1.75 L

• 2.00 L

If both the length and radius of the wire are doubled; how the modulus of elasticity change

• Become one fourth

• Halved

• Doubled

• Remain unchanged