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Most Important Selected Qs for JEE AdvancedPhysicsWaves and Sound

A block of mass 2 m is hanging at the lower end of a rope of mass m and length the , the other end being fixed to the ceiling. A pulse of wavelength ₀ is produced at the lower end of the rope. The wavelength of the pulse when it reaches the other end of the rope is

Options

  1. A5 2 g
  2. B5 3 g
  3. C2 5 ~g
  4. Dg 2

Correct answer

A. 5 2 g

Step-by-step solution

aligned & ( 3 mg ) /( m / ) = ₀ 2 mg /( m / ) & = 3 2 ₀ aligned

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