Focal length of the lens in a photographic camera is 5cm. What is the power and nature of the lens?
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Answered by
34
Power = 100/f(in cm)
power = 100/5 = +20 Diaptore
The lens is Convex as the power is positive and the focal length is also positive.
power = 100/5 = +20 Diaptore
The lens is Convex as the power is positive and the focal length is also positive.
Answered by
7
Guys the answerof alfaromeo is wrong
Pls see the below answer
P=100/f (in cms)
=100/5
1m= 100cm
0.2m= 20cm
Hence,tge poweris 0.2D
The lens is convex as it is positive
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