The frequencies of two sound sources are $252$ Hz and $256$ Hz. The time of one beat is?

0.25

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0.5

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0.75

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0.1

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Solution

The correct option is A $0.25$ s
Beat frequency $b = | ν_{1} - ν_{2} | = | 252 - 256 | = 4$ $s^{- 1}$
So, time of one beat $T = \frac{1}{b} = \frac{1}{4} = 0.25 s$

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The frequencies of two sound sources are 252 Hz and 256 Hz. The time of one beat is?

The correct option is A 0.25 sBeat frequency b=|ν1−ν2|=|252−256|=4 s−1So, time of one beat T=1b=14=0.25 s

The frequencies of two sound sources are $252$ Hz and $256$ Hz. The time of one beat is?

The correct option is A $0.25$ s
Beat frequency $b = | ν_{1} - ν_{2} | = | 252 - 256 | = 4$ $s^{- 1}$
So, time of one beat $T = \frac{1}{b} = \frac{1}{4} = 0.25 s$