JEE Main & Advanced
Physics
Elasticity
Question Bank
Work Done in Stretching a Wire
question_answer
In the above question, the ratio of the increase in energy of the wire to the decrease in gravitational potential energy when load moves downwards by 1 mm, will be
A)1
B) \[\frac{1}{4}\]
C) \[\frac{1}{3}\]
D) \[\frac{1}{2}\]
Correct Answer:
D
Solution :
Ratio of work done = \[\frac{1/2Fl}{Fl}=\frac{1}{2}\]