The figure shows an overhead view of a corridor with a plane mirror MN mounted at one end. A burglar B sneaks along the corridor directly towards the centre of the mirror. If d = 3 m, how far from the mirror will the burglar be when the security guard S can first see him in the mirror?
Text Solution
Verified by ExpertsThe correct answer is:
D
1.5m
(in the smaller triangle)
(in the bigger triangle)
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