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What will be the wave length, if a light of wave length 600 nm travels from air enters a medium of refractive index 1.5 and continues its journey through that medium?

Options

  1. A200 nm
  2. B300 nm
  3. C600 nm
  4. D400 nm

Correct answer

D. 400 nm

Step-by-step solution

When light enters a medium, its frequency remains constant but wavelength changes. The new wavelength ' is given by: ' = n where = 600 nm (wavelength in air) and n = 1.5 (refractive index of medium). ' = 600 1.5 = 400 nm

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