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KVPY2012PhysicsRay Optics

A convex lens of focal length 15 ~cm is placed in front of a plane mirror at a distance 25 ~cm from the mirror. Where on the optical axis and from the centre of the lens should a small object be placed such that the final image coincides with the object?

Options

  1. A15 ~cm and on the opposite side of the mirror
  2. B15 ~cm and between the mirror and the lens
  3. C7.5 ~cm and on the opposite side of the mirror
  4. D7.5 ~cm and between the mirror and the lens

Correct answer

A. 15 ~cm and on the opposite side of the mirror

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