Question

Define principal focus of a concave mirror and convex mirror

Answer 1

• Explanation:

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Answer 2

Answer:

• Principal Focus of Concave Mirror :

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.

• Principal Focus of Convex Mirror :

The point at which the ray or beam of light which are travelling "parallel to the principal axis" either actually in real meets or appears virtually to meet, after the reflection, is called the principal focus. Principal focus of convex mirror is the point where the ray of light after reflection appears to meet.