define the principle focus of a concave mirror ?

Asked by urvashi sharma | 16th Nov, 2013, 10:46: PM

Expert Answer:

In concave mirror, it is the point where all the rays going parrallel to principal axis after reflection either meet or appear to meet is called principal focus.

Answered by Faiza Lambe | 16th Nov, 2013, 11:15: PM

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