a thin lens has a focal length of -25cm. What is the power of lens? Is it covex or concave
SamRaiden:
Is it concave lens
yes
hmm
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2
Power of lens = 1/f = - 0.04 diopter and the lens is concave
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0
Answ is..... it is a concave lens.
And power is - 0.04d
And power is - 0.04d
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