1.

It is desired to photograph the image of an object placed at a distance of \[3m\] from the plane mirror. The camera which is at a distance of \[4.5m\] from the mirror should be focussed for a distance of                                    [NCERT 1971]

A.            \[3m\]                                    
B.            \[4.5m\]
C.            \[6m\]                                    
D.            \[7.5m\]
Answer» E.


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