Hooke's Law (Elastic Behaviour and Stress-Strain Relationship) NEET Questions

Physics - Properties of Solids and Liquids

Hooke's Law (Elastic Behaviour and Stress-Strain Relationship) MCQ Questions


1.
According to Hooke's law, within the elastic limit, stress is proportional to strain. This holds true for which region of the stress-strain curve?
A.
Region O to A
B.
Region A to B
C.
Region B to D
D.
Region D to E
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ANSWER :
A. Region O to A
2.
The constant of proportionality in Hooke's law (stress = k × strain) is called:
A.
Modulus of elasticity
B.
Poisson's ratio
C.
Bulk compressibility
D.
Strain energy density
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ANSWER :
A. Modulus of elasticity
3.
Hooke's law is described as an empirical law. This means:
A.
It is universally valid for all materials under all conditions
B.
It is based on experimental observations and is valid for most materials
C.
It applies only to gases and liquids
D.
It can be derived from Newton's laws of motion
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ANSWER :
B. It is based on experimental observations and is valid for most materials
4.
For which of the following materials does Hooke's law NOT hold over most of the elastic region?
A.
Aluminium
B.
Steel
C.
Copper
D.
Rubber / elastic tissue of aorta
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ANSWER :
D. Rubber / elastic tissue of aorta
5.
A spring is stretched within its elastic limit. When the applied force is doubled, the extension becomes:
A.
Remains the same
B.
Twice
C.
Half
D.
Four times
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ANSWER :
B. Twice
6.
The restoring force per unit area developed inside a deformed body is called:
A.
Young's modulus
B.
Stress
C.
Pressure
D.
Strain
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ANSWER :
B. Stress