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. A spherical drop of mercury having a potential of 2.5 v is obtained as a result
  2. Three fourth of the active material decays in a radioactive sample in 3/4 sec
  3. A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.
  4. Surface tension of water will be minimum at
  5. A spring balance is attached to the ceiling of a lift.A man hangs his bag on the spring