Navigate

The equiconvex lens has focal length f. If it is cut perpendicular to the principal

The equiconvex lens has focal length f. If it is cut perpendicular to the principal axis passing through optical centre, then focal length of each half is

Options

(a) f/2
(b) f
(c) 3f/2
(d) 2f

Correct Answer:

2f

Explanation:

When an equiconvex lens is cut parallel to principal axis, then focal length remains the same and when the lens is cut perpendicular to principal axis, then its focal length becomes twice the original.

MH2014
admin:

Related Questions

  1. The current gain of a transistor in common base configuration is 0.96.
  2. A pure semiconductor behaves slightly as a conductor at
  3. A particle of mass ‘m’ is kept at rest at a height 3R from the surface of earth
  4. The periodic waves of intensities I₁ and I₂ pass through a region at the same time
  5. Two parallel metal plates having charges +Q and -Q face each other at a certain