Wave motionMedium
Question
The tension in a piano wire is 10N. The tension in a piano wire to produce a node of double frequency is:
Options
A.20 N
B.40 N
C.10 N
D.120 N
Solution
n ∝ √T, Here T is tension in the wire In order to increase frequency twice, tension needs to be made 4 times. SO new tension must be 4 × 10 = 40N
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