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Waves question

2020 · Q142
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Waves question

2020 · Q142

NEETPhysicsWavesMCQ+4 / −1
In a guitar, two strings A and B made of same material are slightly out of tune and produce beats of frequency 6 Hz. When tension in B is slightly decreased, the beat frequency of A is 530 Hz, the original freqnency of B will be :
  1. A
    524 Hz
  2. B
    536 Hz
  3. C
    537 Hz
  4. D
    523 Hz
View written solutionFree

Correct answer: A

Difference of fA>fB{f _A} \gt {f _B}fA​>fB​

fA−fB{f_A} - {f_B}fA​−fB​ = 6 Hz

fA{f_A}fA​ = 530 Hz

fB{f_B}fB​ = 524 Hz (original)

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