Question

what is concave lens?​

Answer 1

${\bold{\blue{\underline{\red{An}\pink{sw}\green{er}\purple{:-}}}}}$

☛ A concave lens is a type of lens that diverges a straight light beam coming from the source to a diminished, upright virtual images.

• A concave lens is thin in the middle but thicker at the edges.

• It can form both real and virtual images.

• A concave lens diverges a parallel beam of light rays.

• The principal focus of a concave lens is a point on its principal axis from which light rays,originally parallel to the axis,appear to diverge after passing through the concave lens.

• A concave lens is also known as diverging lens because it diverges parallel beam of light rays.

• A concave lens has a virtual focus.

• Concave lenses are used to correct myopia which is also called nearsightedness.

• It is also used in telescope to magnify object.

Answer 2

Explanation:

concave lens is a lens that possesses at least one surface that curves inwards. It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).

❣️❣️❣️❣️❣️❣️