ICSE Class 10 Physics 2022 Solved Paper

The diagram below shows a vibrating tuning fork E mounted on a sound box X. When the vibrating tuning forks A, B, C and D are placed on the sound box Y one by one, it is observed that a louder sound is produced when the tuning fork B is placed on Y.

Question : 34

Total: 45

What is the frequency of tuning fork E?

Solution:

The frequency of tuning fork E will be equal to the frequency of tuning fork B i.e., 320‌Hz. The reason is tuning forks E and B will be in resonance with each other as a louder sound is produced when the tuning fork B is placed on Y. In resonance the frequency of the external applied periodic force is equal to the frequency of the body made to vibrate.

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