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Q.

Two wires of same material and same diameter but lengths in the ratio 3: 5 are stretched by the same length. The ratio of the forces applied on two wires is

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a

4 : 3

b

5 : 3

c

3 : 4

d

3 : 2

answer is D.

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Detailed Solution

F=yAeL       (Here y, A and e are same)

F∝1L ,   F1F2=L2L1=53

 

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