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Question

In an experimental determination of the velocity of sound using a Kundt's tube, standing waves are set up in the metallic rod as well as in the rigid tube containing air, both the waves have the same :

A
amplitude
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B
frequency
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C
wavelength
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D
particle velocity
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Solution

The correct option is C frequency
Speed, wavelength and amplitude change as it is traveling through different material on the other side frequency must remain constant to conserve energy (which is dependent solely on frequency).

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