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KCET2010PhysicsRay Optics

A point object O is placed in front of a glass rod having spherical end of radius of curvature 30 ~cm . The image would be formed at

Options

  1. A30 ~cm left
  2. Binfinity
  3. C1 ~cm to the right
  4. D18 ~cm to the left

Correct answer

A. 30 ~cm left

Step-by-step solution

By using formula, ₂ v - ₁ u = ₂- ₁ R 1.5 v - 1 (-15) = (1.5-1) +30 v =-30 ~cm Negative sign shows that, image is obtained on the same side of object ie, towards left.

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