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MHT CET202122 Sep 2021Evening ShiftPhysicsWaves and SoundActual

' n ' waves are produced on a string in 1 second. When the radius of the string is doubled, keeping tension same, the number of waves produced in 1 second for the same harmonic will be

Options

  1. A2 n
  2. Bn 2
  3. Cn 2
  4. D2 n

Correct answer

B. n 2

Step-by-step solution

Frequency of vibration of the string is given by aligned & n = 1 2 T m = 1 2 T r ^2 = 1 2 r T & n ^ n = r r ^ = 1 2 & n ^ = n 2 aligned

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