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
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.
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