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NEET2014PhysicsOscillationsActual

A bottle weighing 220 ~g and of area of crosssection 50 ~cm ^2 , and height 4 ~cm oscillates on the surface of water in vertical position. Its frequency of oscillation is

Options

  1. A1.5 ~Hz
  2. B2.5 ~Hz
  3. C3.5 ~Hz
  4. D4.5 ~Hz

Correct answer

B. 2.5 ~Hz

Step-by-step solution

Let h be the depth of bottle in water then A h g=m g or h= m A = 200 50 1 =4 ~cm . Now time period, T=2 h g or v= 1 T = 1 2 g h = 7 2 22 980 4 =2.5 ~Hz

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