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 boat taken 2h to travel 8km and back in still water.If the velocity of water 4 km/h
  2. In nuclear fusion, two nuclei come together to form a large nucleus.
  3. The potential energy of particle in a force field is U = A/r² – b/r, where A and B
  4. The electric field associated with an e.m. wave in vacuum is given by
  5. A missile is fired for maximum range with an initial velocity of 20 m/s