5(ii)
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 place on Y.
(a) What is the frequency of tuning fork E?
(b) Why does B produce a louder sound?
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(a) Frequency of E is 320 Hz.
(b) B produces large sound since the frequency of B matches with the frequency of E and resonance occurs.