Q.

Is it true concave lens is called a diverging lens?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
Concave lenses are thinner in the middle. Rays of light through the lens are taken at the forefront out (they diverge). A concave lens is a diverging lens. When parallel rays pass through a concave lens, the refracted rays diverge hence that they appear in the future from one point called the principal focus. So, the concave lens always behaves as a diverging lens.
 
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