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PQRS shows the walls of room each measuring 8 m, such that wall PQ has a full length plane mirror. A camera is placed at M the mid point of wall SR. ln order to take clear image of the point R, the camera should be focused at (A) 4 m(B) 8 m(C) 16 m(D) more than 16 metres |
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Answer» Correct option (D) more than 16 metres Explanation: Perpendicularly the image of R is 8 m behind the mirror (say R). However, with respect to camera at M,it is the diagonal distance (MR'), which is more than 16 m. |
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