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A horizontal ray of light passes through a prism of refractive index 1.5 and apex angle 4^ and then strikes a vertical plane mirror placed to the right of the prism. If after reflection, the ray is to be horizontal, then the mirror must be rotated through an angle

Options

  1. A1^ clockwise
  2. B1^ anticlockwise
  3. C2^ clockwise
  4. D2^ anticlockwise

Correct answer

A. 1^ clockwise

Step-by-step solution

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