The?focal?point F and?focal length?f of a positive (convex) lens, a negative (concave) lens, a concave?mirror, and a convex?mirror. The?focal length?of an optical system is a measure of how strongly the system converges or diverges light.
4) Focal length of a mirror is given by
Answer is:
f = R/2, R=radius of curvature
Explanation:
Related Optics MCQ with Answers
Answer is:
1/f=1/u + 1/v
Explanation:
According to the mirror equation 1/f=1/u + 1/v
Answer is:
(-v)/u
Explanation:
Magnification for spherical mirrors m is given by (-v)/u
Answer is:
Change of direction of propagation of light at the interface of two media as light passes from one medium to another
Explanation:
Refraction?is the bending of a wave when it enters a medium where its speed is different. The?refraction?of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media.
Answer is:
The ratio of the sine of the angle of incidence to the sine of angle of refraction is constant
Explanation:
a law stating that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media.