Which Mirror is used by opticians while testing eye sight of a patient ??? Give Reasons.

Asked by bookworm | 15th Nov, 2008, 02:24: PM

Expert Answer:

While testing eye sight of a patient, convex lens are used as they give magnified ,virtual and erect image of the object when placed at appropriate distance.

Answered by  | 4th Dec, 2008, 01:03: PM

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