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 metal plate weighing 750g is to be electroplated with 0.05% of its weight of silver.
  2. When a radioactive substance emits an ∝ particle, its position in the periodic table
  3. The ratio of specific charge of an α-particle to that of a proton is
  4. The de-Broglie wavelength of an electron having 80 eV of energy is nearly
  5. The drift speed of electrons in copper wire of diameter and length l is v.