Find the focal length (in cm) lens power -2D and also find also type of lens
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P = 1/f(in metres)
f = 1/-2m
f = 1/-2 ×100
f = -50cm
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Answered by
1
Power _ 1/focal length.power is given that is - 2D.therefore focal length _ 1/ power that is 1/-2.multiply it by 100 to convert it into cm .Answer is -50cm and the lens must be concave.
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