Question

A concave lens is called a diverging lens. Give reasons for it.

Answer 1

HEY MATE______>

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. When parallel rays of light pass through a concave lens the refracted rays diverge so that they appear to come from one point called the principal focus.

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Answer 2

Dear Student,

◆ A concave lens is called a diverging lens because -

• In concave lens, spherical surfaces are recessed inwards.
• It is thinned out in the middle.
• When parallel beam of light is passed through concave lens, light rays spread out to different directions.
• Hence, a concave lens is called a diverging lens.

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