Question

Define the principal focus of a concave mirror.

Answer 1

Answer:

Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror.

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Answer 2

$\huge\mathcal\color{teal} Answer :-$

Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror.

When parallel rays of light parallel 2 d principal axis are incident on d mirror they gets reflected 2wards a fixed point on d principal axis.This point is known as Principal Focus. Moreover,When parallel rays of light NOT parallel 2 d principal axis are incident on d mirror they gets reflected 2wards a fixed point on a plane perpendicular 2 d principal axis dis point is as secondary focus.

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