Question

Which of the following statement is correct? 

(A) Hooke's law is applicable only within elastic limit. 

(B) The adiabatic and isothermal elastic constants of a gas area equal. 

(C) Young's modulus is dimensionless. 

(D) Stress multiplied by strain is equal to stored energy.

Answer 1

Correct option: (A) Hooke's law is applicable only within elastic limit.

Explanation:

(1) Hooke's law is applicable only within elastic limit.

(2) The adiabatic and isothermal elastic constants of a gas are different.

(3) Young's modulus unit – N/m² 

(4) (1/2) × stress × strain = [(Energy stored) / (volume)]