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MHT CET202014 Oct 2020Morning ShiftPhysicsMechanical Properties of FluidsActual

One thousand small water drops of equal radii combine to form a big drop. The ratio of final surface energy to the total initial surface energy is

Options

  1. A1:1000
  2. B1:1
  3. C1: 10
  4. D1: 100

Correct answer

C. 1: 10

Step-by-step solution

U₁=1000 4 r₁² T r₂ r₁ =(1000)^ 1 / 3 =10U₂=4 r₂² T U₂ U₁ = 4 r₂² T 1000 4 r₁² T = 100 1000 = 1 10

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