a convex lens has a focal length of 50 cm if Power is
a)2d
b)5d
c)0.5d
d)0.02d
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Power= 1/f(in m)
P=1/0.5m
P=2D
Therefore option a)2d is the answer
Hope it helps:)
P=1/0.5m
P=2D
Therefore option a)2d is the answer
Hope it helps:)
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