Question

A wire of length L and radius r is rigidly fixed at one end. On stretching the other end of the wire with a force F, the increase in its length is l. If another wire of same material but of length 2L and radius 2r is stretched with a force of 2F, the increase in its length will be [NCERT 1980; AIIMS 1980; MP PET 1989, 92; MP PET/PMT 1988; MP PMT 1996, 2002; UPSEAT 2002]
A) l B) 2l C) \frac{l}{2} D) \frac{l}{4}

Answer 1

Hello Friend.....

The answer of u r question is..

Option.c

thank you..

Answer 2

hi

option c is correct thx