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Question

The frequencies of two sound sources are $$256\space Hz$$ and $$260\space Hz$$ respectively. The beat frequencies produced by them will be


A
0.025 s1
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B
2.5 s1
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C
4.00 s1
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D
25 s1
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Solution

The correct option is C $$4.00\space s^{-1}$$
Given:     $$\nu_1 =  256   Hz$$    and      $$\nu_2 =  260   Hz$$

Beat frequencies produced     $$b  = |\nu_1 - \nu_2|$$  $$s^{-1}$$

   $$b  = |256 - 260 |$$  $$s^{-1}      $$

$$\implies    b = 4.00      s^{-1}$$

Physics

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