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CBSE Class 10 Answered

a person wears glasses of power -2.5D.what is the far point of the person without glasses
Asked by | 23 Dec, 2011, 11:49: AM
Expert Answer

Since the power is negative, the person uses a concave lens. Hence we can say that the person suffers with Myopia or  near sightedness.

Now, far point of the person..

F= 1/P

F= 1/2.5

F= 0.4 m or 40cm

Answered by | 24 Dec, 2011, 10:37: PM
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