Question

How to find focal length​

Answer 1

Answer:

of what? i am giving about concave mirror

Explanation:

Since concave mirror is converging mirror in nature.Hence we can place a parallel light beam incident on it and they all will converge at focus .Which then can be measured.

Answer 2

Focal length is the distance between The Focus and The Pole of a mirror.

Focal Length = Radius of Curvature/2

So, for example if Radius is 10cm. Then focal length is 5 cm.

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