CBSE Class 10 Science 2017 · Paper 31/3/C · Question 13
Draw each of the following diagrams on your answer-sheet and show the path of the ray after reflection in each case.
Answer
The ray at the pole reflects with ; rays towards or through F reflect parallel to the principal axis.
(i) The ray strikes the convex mirror at its pole P, where the normal is the principal axis. It is reflected on the other side of the principal axis, making an equal angle with it ().
(ii) The ray is directed towards the principal focus F of the convex mirror, so after reflection it travels parallel to the principal axis.
(iii) The ray passes through the principal focus F of the concave mirror, so after reflection it travels parallel to the principal axis.
The completed diagrams are shown in the figure.
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