Question

Boojho planned a activity to observe an object A  through pipes as shown in Fig. 16.8, so that he could see objects which he could not directly see. 
(a) How many mirrors should he use to see the objects?
(b) Indicate the positions of the mirrors in the figure.
(c) What must be the angle with respect to the incident  light at which he should place the mirrors?
(d) Indicate the direction of rays in the figure.
(e) If any of the mirrors is removed, will he be able to
see the objects?

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Solution
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(a) Three Plane mirrors
(b) As shown in fig-
(c) 45°
(d) As shown in figure-
(e) No, he will not be able to see the objects.

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