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Question

The figure shows two tuning forks A and B of the same frequency mounted on two separate sound boxes with their open ends facing each other. The fork A is set into vibration.

(a) Describe your observation.

(b) State the principle illustrated by this experiment.

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Solution

(a) If the prong A is struck on a rubber pad, it starts vibrating. On putting A on its sound box, tuning fork B also starts vibrating and a loud sound is heard.

(b) The vibrations produced in B are due to resonance.


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