Physics Elasticity Question 140
Question: In which case there is maximum extension in the wire, if same force is applied on each wire
[AFMC 1997]
Options:
A) L = 500 cm, d = 0.05 mm
B) L = 200 cm, d = 0.02 mm
C) L = 300 cm, d = 0.03 mm
D) L = 400 cm, d = 0.01 mm
Show Answer
Answer:
Correct Answer: D
Solution:
$ l\propto \frac{L}{r^{2}} $ (Y and F are constant) Maximum extension takes place in that wire for which the ratio of $ \frac{L}{r^{2}} $ will be maximum.
BETA
