a person wears glasses of power -2.5D.what is the far point of the person without glasses
Asked by | 23rd 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
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 | 24th Dec, 2011, 10:37: PM
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