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  4. Two tuning forks of frequencies 256 Hz and 258 Hz are sounded together. The time interval between consecutive maxima heard by the observer is

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Q. Two tuning forks of frequencies $256 Hz$ and $258 Hz$ are sounded together. The time interval between consecutive maxima heard by the observer is

Waves

Solution:

image
Beat frequency $=258 Hz -256 Hz$
$=2$ per second
Hence time-interval between consecutive maxima $=\frac{1}{2} s$
$=0.5 \,s$