Question

difine focal length of a mirror​

Answer 1

Answer:

The focal length ( f ) is the distance from a lens or mirror to the focal point ( F ). This is the distance from a lens or mirror at which parallel light rays will meet.

Answer 2

Answer:

required answer :-

The focal length ( f ) is the distance from a lens or mirror to the focal point ( F ). This is the distance from a lens or mirror at which parallel light rays will meet.

Explanation:

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