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The tension in a piano wire is 10 N. The...

The tension in a piano wire is `10 N`. The tension ina piano wire to produce a node of double frequency is

A

20 N

B

30N

C

40 N

D

80 N

Text Solution

Verified by Experts

The correct Answer is:
C
`n proptosqrtT " " :. n^(2) propto T`
` :. ((2n)/n)^(2) = T_(2)/10 :. T_(2) = 4 xx 10 = 40 N`
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