JEE Physics · Hard

Sound Waves: Resonance Column MCQ

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

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Resonance ColumnHardQuestion 31259

Question

If resonance column first resonates at 24 cm and second at 75 cm, the end correction is:
  1. A
    1.5 cm
    Correct
  2. B
    3 cm
  3. C
    0 cm
  4. D
    2.5 cm

Correct answer

1.5 cm

Explanation

L₂ − L₁ = λ/2 = 51 cm → λ = 102 cm. L₁ + e = λ/4 = 25.5 cm → e = 25.5 − 24 = 1.5 cm.