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The focal point is the point through which parallel incident rays reflecting off the surface of a concave mirror converge. Is this true or false?
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The focal point is the point through which parallel incident rays reflecting off the surface of a concave mirror converge. Is this true or false?

User Igor Chornous
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1 Answer

1 vote

When a beam of rays that are parallel to the principal axis is incident on a concave mirror converges at the focal point.

But, if any other set of parallel rays that are not parallel to the principal axis is incident on a concave mirror they will not converge at the focal point. They will converge at a distance of focal length, but not on the focal point.

Thus the given statement is not true.

User QualiT
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