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BEATS (SOUND) NUMERICALS DERIVATION CONCEPT \ MAHARASHTRA BOARD CLASS 12 PHYSICS SOLUTION

 BEATS (SOUND) NUMERICALS DERIVATION CONCEPT \ MAHARASHTRA BOARD CLASS 12 PHYSICS SOLUTION

 





 
A set of 8 tuning forks is arranged in a series of increasing order of frequencies. Each fork gives 4 beats per second with the next one and the frequency of last fork is twice that of the first. Calculate the frequencies of the first and the last fork.
[Ans: 28 Hz, 56 Hz]

A sonometer wire is stretched by tension of 40 N. It vibrates in unison with a tuning fork of frequency 384 Hz. How many numbers of beats get produced in two seconds if the tension in the wire is decreased by 1.24 N?
[Ans: 12 beats]

 

 

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