Find the power of concave lenses of focal length 2m
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The focal length is given concave lens is 2 m power of lens p = 1/f.
P = 1 / -2 ( v shd always take it negative)
P = -0.5 D
P = 1 / -2 ( v shd always take it negative)
P = -0.5 D
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power of the lens
p=1/f
p=1/-2
p= -.5 dioptre
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