A spherical mirror and a lens have same focal length of - 20 cm. What type of mirror and lens are these?

+1 vote
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asked Jan 19, 2018 by Kundan kumar (49,132 points) 34 384 1027

A spherical mirror and a lens have same focal length of - 20 cm. What type of mirror and lens are these?

1 Answer

+1 vote
answered Jan 19, 2018 by Vikash Kumar (144,729 points) 8 11 21
selected Jan 30, 2018 by faiz
 
Best answer

A concave mirror and concave lens have negative focal length. Hence, both mirror and lens are concave.

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