Determine the focal length of a concave mirror by two pin method?

Question; Determine the focal length of a concave mirror by two pin method?

Concave mirror also known as converging mirror because that type of mirror converging light on focal point so it is used in focusing the light. Several steps to find out the focal length of concave mirror by the two pin method is, (1) ensure your apparatus is good in condition (2) distance measure between the wire and mirror by the scale (3) name the value u and v respectively (4) and calculate the focal length by the formula f=uv/(u+v).

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