JEE Main & Advanced
Physics
Elasticity
Question Bank
Youngs Modulus and Breaking Stress
question_answer
The Young's modulus of a wire of length L and radius r is Y N/m2. If the length and radius are reduced to L/2 and r/2, then its Young's modulus will be [MP PMT 1985; MP PET 1997; KCET 1999]
A)Y/2
B) Y
C) 2Y
D) 4Y
Correct Answer:
B
Solution :
Young's modulus of wire does not varies with dimension of wire. It is the property of given material.