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Question 31222
JEE Physics · Easy

Sound Waves: Beats MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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BeatsEasyQuestion 31222

Question

Beat frequency when two tuning forks have frequencies f₁ and f₂ is:
  1. A
    f₁ + f₂
  2. B
    |f₁ − f₂|
    Correct
  3. C
    f₁ × f₂
  4. D
    (f₁ + f₂)/2

Correct answer

|f₁ − f₂|

Explanation

Beats arise from periodic constructive/destructive interference. Beat frequency = |f₁ − f₂|.

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