Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Sound Waves/
Question 31240
JEE Physics · Hard

Sound Waves: Resonance in Pipes MCQ

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

Timer-based practiceDetailed answer reviewMobile-friendly flow
Resonance in PipesHardQuestion 31240

Question

In a closed pipe of length 1 m (v_sound = 340 m/s), frequencies of 3rd and 5th harmonics are:
  1. A
    340 Hz, 680 Hz
  2. B
    255 Hz, 425 Hz
    Correct
  3. C
    510 Hz, 850 Hz
  4. D
    170 Hz, 340 Hz

Correct answer

255 Hz, 425 Hz

Explanation

Closed pipe: f_n = nv/(4L) for odd n. f₁ = 340/4 = 85 Hz. f₃ = 3×85 = 255 Hz. f₅ = 5×85 = 425 Hz.

Review Sound Waves notesStart timed chapter practice