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MHT CET20228 Aug 2022Evening ShiftPhysicsRay OpticsActual

A ray of light is incident normally on a glass slab of thickness 5 ~cm and refractive index 1.6. The time taken to travel by a ray from source to surface of slab is same as to travel through glass slab. The distance of source from the surface is

Options

  1. A12 cm
  2. B24 cm
  3. C5 cm
  4. D8 cm

Correct answer

D. 8 cm

Step-by-step solution

Speed of light in a maternal of index is ( C ) Given: t _ SA = t _ SB aligned & t _ SA = d c = 1 ( C ) & d = l =1.6 5 ~cm =8 ~cm aligned

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