JEE Physics · Hard

Waves on String: One End Fixed MCQ

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One End FixedHardQuestion 31351

Question

3rd harmonic of string fixed at one end, free at other of length 1 m (v = 200 m/s):
  1. A
    50 Hz
  2. B
    150 Hz
    Correct
  3. C
    100 Hz
  4. D
    200 Hz

Correct answer

150 Hz

Explanation

f_n = nv/(4L) for odd n. f₃ = 3×200/4 = 150 Hz.