Fri December 23, 2011 By:

a person wears glasses of power -2.5D.what is the far point of the person without glasses

Expert Reply
Sat December 24, 2011

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

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