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MHT CET202014 Oct 2020Morning ShiftPhysicsWaves and SoundActual

A sonometer wire resonates with a given tuning fork forming standing wave with 5 antinodes between two bridges when mass of 9 ~kg is suspended from the wire. When mass 'm' is suspended from the wire, with same fork and same length between two bridges 3 antinodes are formed. Mass M is

Options

  1. A25 Kg
  2. B20 Kg
  3. C15 Kg
  4. D10 Kg

Correct answer

A. 25 Kg

Step-by-step solution

n = P ₁ 2 T m ₁ = P ₂ 2 I m ₂ P ₁ P ₂ = m ₂ ~m ₁ = m 9 = m 3 5 3 = m 3 m =25 ~kg m =5

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