Question

two precaution by using concave mirror

Answer 1

• The convex lens should be of thin aperture for obtaining distinct image.
• We should use a very sharp pencil to draw thin lines to represent incident and refracted rays.

Answer 2

Answer:

Uses of Concave mirrors:-

(i) Concave mirrors are used

By dercit to provide

magnified image of truth.

(ii) Concave mirrors are used

to fours the light inwards,

so, they are used in

headlight.

(iii) Concave mirrors are used

in supermarket for

surveillance.