Q

Which statements about the principal axis are correct? 1. It is an imaginary line extended on both sides of the mirror. 2. It passes through C, F and P. 3. It is curved for a curved mirror.

RRB Group-D 30/09/2022 / Shift-II 2022
✓ Answer: D Only 1 and 2
The principal axis is a straight line through P, F and C, even for a curved mirror.
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