JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Understanding +4 | -1

Assertion: A ray of light incident along the normal to the plane mirror retraces its path after reflection from the mirror.
Reason: A ray of light along the normal has angle of incidence as

\pi / 2

and hence, it retraces its own path after reflection from mirror.

View answer and explanation

Correct option: C

Assertion is true but Reason is false

Option C (Assertion is true but Reason is false) is correct because the angle of incidence for a ray along the normal is 0, not

\pi/2

More Questions from RAY OPTICS

Practice All Chapter MCQs →

In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium A double convex lens is made of glass which has its refractive index 1,45 for violet rays and 1.50 for red rays. If the focal length for violet ray is

20 \mathrm{~cm}

, the focal length for red ray will be Which light rays undergoes two internal reflection inside a raindrop, which of the rainbow is formed? A piece of plane glass is placed on a word with letters of different colours. The letters which appear minimum raised are A dentist has a small mirror of focal length

16 {~mm}

. He views the cavity in the tooth of a patient by holding the mirror at a distance of

8 {~mm}

from the cavity. The magnification is All of the following statements are correct except