Question

S
23. (a) If the image formed by a mirror for all positions
of the object placed in front of it is always
diminished, erect and virtual, state the type of the
mirror and also draw a ray diagram to justify your
answer. Write one use such mirrors are put to and
why.
(b) Define the radius of curvature of spherical mirrors.
Find the nature and focal length of a spherical
mirror whose radius of curvature is +24 cm. [5]​

Answer 1

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Answer a -

The mirror is a convex mirror.The image formed by the mirror will always be erect and virtual and diminished.

The ray diagram is in attachment.

The concave mirror is used in front light of cars to reflect the light.

Answer b-

The radius of curvature of a spherical mirror is defined as the radius of the original sphere from which the mirror is belonged from.

Focal length of the spherical mirror is=12cm,so this a kind of convex mirror.

Hope it helps you.. ✌️

Answer 2

Answer:

(a) . The mirror is convex.

(b) . The radius of sphere of which the spherical mirror is a part is called radius of curvature.

Nature:- Convex mirror

Focal length is 12 cm because focal length is half of radius of curvature.

Explanation:

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