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2016-01-10T13:11:17+05:30

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Concave lens is diverging lens. A diverging lens is thin in the middle and thicker at the edges. It is just opposite of concave mirror. Concave mirror is converging and concave lens is diverging.

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2016-01-11T19:48:19+05:30

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If a lens is thinner at the centre and gradually becomes thicker towards the edges , it is a concave lens. a concave lens diverges a parallel beam of light after refraction through it .hece , it is also called a diverging lens.it is in spectales of concave lens who has short - sightedness.
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