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Standard IX

Physics

Effect of Temperature on Speed of Sound in Gases

Two strings X...

Question

Two strings X and Y of a sitar produces a beat of frequency 4 Hz. When the tension of string Y is slightly increased, the beat frequency is found to be 2 Hz. If the frequency of X is 300 Hz, then the original frequency of Y was?

296 Hz

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298 Hz

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302 Hz

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304 Hz

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Solution

The correct option is A 296 Hz
increase in tension in Y increases its frequency and as given in question on the beat frequency decreases , means that initially Y has the lower frequency
so the frequency of Y was = $300 - 4 = 296$
so the answer is A.

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Two strings X and Y of a sitar produces a beat of frequency 4 Hz. When the tension of string Y is slightly increased, the beat frequency is found to be 2 Hz. If the frequency of X is 300 Hz, then the original frequency of Y was?

The correct option is A 296 Hzincrease in tension in Y increases its frequency and as given in question on the beat frequency decreases , means that initially Y has the lower frequency so the frequency of Y was = 300−4=296so the answer is A.

The correct option is A 296 Hz
increase in tension in Y increases its frequency and as given in question on the beat frequency decreases , means that initially Y has the lower frequency
so the frequency of Y was = $300 - 4 = 296$
so the answer is A.