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NEET 2009 Physics question

PhysicsWavesNEET 2009

Each of the two strings of length and are tensioned separately by force. Mass per unit length of both the strings is same and equal to . When both the strings vibrate simultaneously the number of beats is:

Answer: (1)

Solution

Wave speed on each string: . Fundamental frequency of a string fixed at both ends: $f =

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Question ID VK-090150