Power of lens (P) = -2.0 D
P = 1/f or f = 1/m
f = 1/-2.0 = -0.5 m
Negative sign of focal length means that the lens is concave lens.
Power of lens (P) = -2.0 D
P = 1/f or f = 1/m
f = 1/-2.0 = -0.5 m
Negative sign of focal length means that the lens is concave lens.
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