Q.

When tension of a string is increased by 2.5 N, the initial frequency is altered in the ratio of 3 : 2. The initial tension in the string is

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a

6 N

b

5 N

c

4 N

d

2 N

answer is D.

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Detailed Solution

f∝T∴f1f2=T1T232=T+2.5T⇒T=2N
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