Physics Elasticity Question 50
Question: Two wires of same diameter of the same material having the length l and 2l. If the force F is applied on each, the ratio of the work done in the two wires will be
[MP PET 1989]
Options:
A) 1 : 2
B) 1 : 4
C) 2 : 1
D) 1 : 1
Show Answer
Answer:
Correct Answer: A
Solution:
$ W=\frac{1}{2}Fl $ \ $ W\propto l $ (F is constant) \ $ \frac{W _{1}}{W _{2}}=\frac{l _{1}}{l _{2}}=\frac{l}{2l}=\frac{1}{2} $
BETA
