Optics 1 Question 8
8. A point source of light , placed at a distance in front of the centre of a plane mirror of width , hangs vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance from it as shown. The greatest distance over which he can see the image of the light source in the mirror is
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 8. (d)
Solution:
- The ray diagram will be as follows :
Since,
Similarly,