Paraxial Approximation
Trending Questions
Q. In image formation from spherical mirrors, only paraxial rays are considered because they
- are easy to handle geometrically
- are not parallel to principal axis
- form nearly a point image of a point source
- are far from principal axis
Q. Find the angle of incidence (θ) of a paraxial ray incident on a concave mirror of large aperture, for which it passes through the pole (P) after reflection.
- 60∘
- 30∘
- 45∘
- 75∘
Q. Find the angle of incidence (θ) of a paraxial ray incident on a concave mirror of large aperture, for which it passes through the pole (P) after reflection.
- 60∘
- 30∘
- 45∘
- 75∘