if the power of the lens is +2D what is its radius of curvature
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Explanation:
focal length is reciprocal of power
f = 1/2= 0.5m
it is positive ,hence this lens is a converging lens.
f = R/[2(n-1)]
0.5 = R/(2x 0.5)
R = 0.5 X 0.5 X 2=0.25 X 2 =0.5
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