Power of convex lens is positive or negative
Asked by admin @ in Physics viewed by 319 People
Why is the power of convex lens positive and that of a concave lens negative
Answered by admin @
Heya !
=> It is because focal length of convex lens is +ve and
Since P=1/f
Therefore power of convex lens is positive
Similarly ,
=> Power of concave lens is negative because it's focal length is negative.
Hope it helps !!!
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