Name the point where a beam of light incident parallel to the principal axis of a concave mirror will converge after reflection from the mirror.

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Solution

Focus:
A beam of light incident parallel to the principal axis of a concave mirror will converge at focus after reflection from the mirror.
Focus is denoted by the symbol $F$ .
The distance between the focus and pole of the mirror is called the focal length.
Thus, beam of light incident parallel to the principal axis of a concave mirror will converge at focus after reflection

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