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MHT CET Physics question

PhysicsWavesMHT CET

The equation of a stationary wave on a string clamped at both ends and vibrating in third harmonic is given by where x and y are in cm and t in second. The length of the vibrating string is [MHT-CET 2021]

Answer: (D)

Solution

cm so cm; third harmonic has 3 loops,

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Question ID VK-070563