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JIPMER2019PhysicsWaves and Sound

If frequency (v) of light is 5 10¹⁶ ~Hz and speed of light in air is 3 10^8 ~m / s . Find the ratio of wavelength of light in a medium of refractive index ' 2 ' to air

Options

  1. A1 2
  2. B3
  3. C3 2
  4. D2

Correct answer

D. 2

Step-by-step solution

v =v , Here, v is same as source of light. aligned & v , v₁ v₂ = ₁ ₂ & But v ₁= c n ₁ , v ₂ (in air) = c n ₂ = c & ₁ ₂ = c / n ₁ c = 1 n ₁ = 1 2 n ₁=2 aligned

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