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Most Important Selected Qs for JEE AdvancedPhysicsWaves and Sound

A thick rope of length 2 L and linear mass density 9 is joined at B to a thin rope of length L and linear mass density 4 . The system is horizontally stretched by the two vertical wall A and C. Assuming B to be a node, find the minimum number of loops in the thick rope.

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

C. 3

Step-by-step solution

aligned & 2 ~L = m ( ₁ / 2 )= m 2 f T 9 & ~L = n ( ₂ / 2 )= n 2 f T 4 & ~m =3 n =3 1=3 aligned

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