Question

5. Draw ray diagram for the following cases when a ray of light:
a) Passing through the centre of curvature of a concave mirror is incident on it
b) Parallel to the principal axis is incident on convex mirror
c) Is passing through focus of a concave mirror incident on it.
d) Is incident at the pole of a convex mirror​

Answer 1

Answer:

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Answer 2

Answer:

a) The ray retraces its path.

b) The ray appears to pass through the focus of the convex mirror.

c) The light rays become parallel to the surface.

d) The light beam will be reflected at an angle equal to the angle of incidence if it is incident obliquely towards the convex mirror's pole.

Explanation:

• A light ray that travels through the center of curvature of a concave mirror retraces its course (gets reflected along the same path) because it strikes the mirror along the normal as it does so.

• After reflection, a light beam parallel to the major axis of a convex mirror seems to pass through the focus.

• A beam that enters the concave mirror's focus will be reflected in a direction parallel to the main axis.

• The light beam will be reflected at an angle equal to the angle of incidence if it is incident obliquely towards the convex mirror's pole.

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