Can you please tell that what are concave and convex mirrors and lenses and difference and also where they are used?

Hi Sharma!

Concave mirror:

The reflecting surface of the concave mirror is bulged inwards.

Concave mirror produces real and inverted images (except when the object is placed between pole and focus. When the object is placed between F and P, concave mirror produces virtual and erect image). The image formed by the concave mirror may be enlarged or diminished, according to the position of the object.

Uses: Telescopes, Headlights of vehicles, shaving mirror etc.

Convex mirror:

The reflecting surface of the convex mirror is bulged outwards.

Convex mirror always produces virtual and erect images. The image formed by the convex mirror will be always diminished.

Uses: Rear view mirror of vehicles, telescopes etc.

Convex lens:

A lens that possesses at least one surface that is curved outward is known as a convex lens. If both the surfaces of the lens are curved outward, it is known as a biconvex lens.

Uses: Telescopes, spectacles, microscopes etc.

Concave lens:

A lens that possesses at least one surface that is curved inward is known as a concave lens. If both the surfaces of the lens are curved inward, it is known as a biconcave lens.

Uses: Telescopes, spectacles etc.