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JEE Advanced2007PhysicsRay OpticsActual

Paragraph: The figure shows a surface X Y separating two transparent media, medium-1 and medium-2. The lines a b and c d represent wavefronts of a light wave travelling in medium-1 and incident on X Y . The lines ef and g h represent wavefronts of the light wave in medium-2 after refraction. Question: Light travels as a

Options

  1. Aparallel beam in each medium
  2. Bconvergent beam in each medium
  3. Cdivergent beam in each medium
  4. Ddivergent beam in one medium and convergent beam in the other medium

Correct answer

A. parallel beam in each medium

Step-by-step solution

Wavefronts are parallel in both media. Therefore, light which is perpendicular to wavefront travels as a parallel beam in each medium. Hence, the correct option is (a).

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