CBSE Class 10 Science 2019 · Paper 31/5/1 · Question 3
Draw a labelled ray diagram to show the path of the reflected ray corresponding to an incident ray of light parallel to the principal axis of a convex mirror. Mark the angle of incidence and angle of reflection on it.
Answer
The ray parallel to the axis reflects along MB, appearing to come from the principal focus F; .
Ray diagram (see the figure): the ray , parallel to the principal axis, strikes the convex mirror at and is reflected along , away from the axis; the dotted backward extension of passes through the principal focus behind the mirror. extended to is the normal at . The angle of incidence and the angle of reflection are marked, with . The mirror, , , and the arrows on both rays are shown.
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