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In Melde's experiment, 3 loops are obtai...

In Melde's experiment, 3 loops are obtained when the string is stretched by a mass of 6 gm. In order to get 2 loops without changing the position of the fork, the weight to be added (in gm) will be (g=10 `m//s^(2)`)

A

8 g

B

13.5 g

C

7.0 g

D

6.0 g

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The correct Answer is:
B
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