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NEET 1992 (AIPMT) · Beats

Beats question from NEET 1992 (AIPMT)

Q78NEET 1992 · AIPMTEasy

Beats

For production of beats the two sources must have

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Answer: (b)

Beats occur whenever two waves of slightly different frequencies superpose
Equal amplitude or same phase is not required (equal amplitude only makes them clearer)
So the answer is (b) different frequencies.

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