In Melde's experiment , 4 loops were formed when the string was streteched by a weight of 8 gram. What weight should be used to double the number of loops without distrubing the set up ?

Options

A. 1 gram wt
B. 2 gram wt
C. 4 gram wt
D. 6 gram wt

Answer

B

Explanation

`P_(1)^(2)T_(1) = P_(2)^(2)T_(2)" " :. 16 xx 8 = 64 xx T_(2) `
` :. T_(2) = 2 ` gram . wt.