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AP EAMCET202420 May 2024Morning ShiftPhysicsWaves and SoundActual

If the frequency of a wave is increased by 25 % , then the change in its wavelength is (medium not changed)

Options

  1. A20 % increase
  2. B20 % decrease
  3. C25 % increase
  4. D25 % decrease

Correct answer

B. 20 % decrease

Step-by-step solution

Frequency of wave, f 1 ₂ ₁ = f ₁ f ₂ = f ₁ 1.25 f ₁ = 4 5 % = ₁- ₂ ₁ 100= ₁- 4 5 ₁ ₁ 100=20 % decrease

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