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in Physics by (49.1k points)
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Two tuning forks of frequencies 256 and 258 vibration /sec are sounded together , and then time interval between consecutive maxima heard by the observer is 

A ) 2 sec

B ) 0.5 sec

C ) 250 sec

D ) 252 sec

1 Answer

0 votes
by (49.1k points)
 
Best answer

B ) 0.5 sec 

Explanations: 

n1 = 256 

n2 = 258

Both tuning forks are making beats

t( for max . ) = 1 / n2 - n1 sec 

= 1 / ( 258 - 256 )

= 1 / 2

= 0.5  sec

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