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 sound source is moving towards a stationary listener with 1/10th of the speed
  2. A charge Q is uniformly distributed over a large plastic plate. The electric field
  3. If the r.m.s. velocity of a gas is v, then
  4. Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
  5. The velocity of a particle at an instant is 10 ms⁻¹.After 3 s its velocity will become