Kinetic energy (in joule) in one wave length of transverse wave is twice of its average kinetic energy per unit length The wave length of the transverse wave is
A
0.2m
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B
2m
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C
3m
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D
4m
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Solution
The correct option is B2m K.E associated with one wave length of a transverse wave is, ⇒Kλ=14λμω2A2
Avg. K.E per unit length of string, ⇒KAvg=14μω2A2
Given, Kλ=2KAvg ⇒14λμω2A2=2(14μω2A2) ⇒λ=2m