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AP EAMCET201920 Apr 2019Evening ShiftPhysicsRay OpticsActual

An object is fixed at the bottom of a vessel and water is filled in the vessel upto a height of 10 ~cm . A plane mirror is placed at a height of 7 ~cm from the surface of water in such a way that its reflecting surface faces the water. The distance of the image from the mirror is (Refractive index of water, n=1.33 )

Options

  1. A7.5 cm
  2. B7 cm
  3. C14.5 cm
  4. D21.8 cm

Correct answer

C. 14.5 cm

Step-by-step solution

According to the question, the apparent distance of object from the mirror, distance of image from the mirror, d =7 ~cm + apparent depth aligned Apparent depth & = Real depth & = 10 1.33 ( =1.33 , given ) aligned Hence, d=7 ~cm + 10 1.33 =14.5 ~cm

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