what is convex and concave lens
Answers
Convex lenses are thicker at the middle. Rays of light that pass through the lens are brought closer together (they converge). A convex lens is a converging lens.
Concave lenses are thinner at the middle. Rays of light that pass through the lens are spread out (they diverge). A concave lens is a diverging lens.
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Answer:
A lens is a piece of glass or other transparent material with curved sides for concentrating or dispersing light rays, used singly (as in a magnifying glass) or with other lenses (as in a telescope)
Concave lens
A lens made by joining the parts of two spherical surface that is thinner in the middle than at the edges it converts the incident parallel rays and bends away from the principal axis. hence it is a diverging lens
Convex lens
A lens made by joining the parts of two spherical surface that is thicker in the middle than at the edges. it converts the incident parallel rays and bends towards the principal axis. hence it is a converging lens