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MHT CET Physics question

PhysicsWavesMHT CET

String-I is connected with string-2. The mass per unit length in string-1 is , and mass per unit length in string-2 is . The tension in the strings is T. A travelling wave is coming from the left. What fraction of the energy in the incident wave goes into string-2?

Answer: (D)

Solution

Impedances are , so , and the transmitted energy fraction is

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Question ID VK-070225