Home Physics Wave and Sound Speed,Velocity of the Waves and Frequence When two tuning forks A and B are sounded to…
Physics Wave and Sound Speed,Velocity of the Waves and Frequence MCQ (Single Correct)

When two tuning forks A and B are sounded together, x beats/sec are heard. Frequency of A is n. Now when one prong of fork B is loaded with a little wax, the number of beats/sec decreases. The frequency of fork B is –

A
n + x
B
n – x
C
n – x 2
D
n – 2x

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Verified by Experts
The correct answer is:
A

As ' n ' is beat frequency

……(i)

Or

….(ii)

On loading the wax on ' B ' frequency of fork ' B ' decreases, So relation is correct.

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