1.A plane wavefront is incident on a concave mirror of radius ofcurvature R. The radius of the reflected wavefront will be :
Question
1.A plane wavefront is incident on a concave mirror of radius ofcurvature R. The radius of the reflected wavefront will be :
Solution
The radius of the reflected wavefront will be the same as the radius of curvature of the concave mirror. This is because a concave mirror causes parallel light rays that are incident on it to converge at a single point. This point is known as the focus of the mirror. The distance from the mirror to the focus is equal to half the radius of curvature of the mirror. Therefore, the radius of the reflected wavefront will be equal to the radius of curvature of the mirror, which is R.
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