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MHT CET Physics question

PhysicsWavesMHT CET

A set of tuning forks are arranged in ascending order of frequency. Each tuning fork gives 5 beat per second with the preceding one. If the frequency of the first fork is 100 Hz and that of last fork 150 Hz, the total number of tuning forks arranged are:

Answer: (C)

Solution

The frequencies form an arithmetic progression with common difference 5 Hz, so the number of forks is

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Question ID VK-069994