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Question 31228
JEE Physics · Medium

Sound Waves: Beats MCQ

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BeatsMediumQuestion 31228

Question

Two waves of frequencies 198 Hz and 202 Hz are superimposed. Beat period is:
  1. A
    0.25 s
    Correct
  2. B
    0.4 s
  3. C
    1 s
  4. D
    4 s

Correct answer

0.25 s

Explanation

Beat frequency = 202 − 198 = 4 Hz. Beat period = 1/4 = 0.25 s.

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