In Melde's experiment, 6 loops were formed, when the string was stretched by a weight of 6 grams. What weight should be used to produce 3 loops, without changing the experimental set up ?

Options

A. 12 gram wt.
B. 18 gram wt.
C. 24 gram wt.
D. 16 gram wt.

Answer

C

Explanation

`P_(1)^(2) xx T_(1) = P_(2)^(2) xx T_(2)`
` :. 36 xx 6 = 9 xx T_(2) :. T_(2) = 24` gram wt.