1.

A man is \[180cm\] tall and his eyes are \[10cm\] below the top of his head. In order to see his entire height right from toe to head, he uses a plane mirror kept at a distance of \[1m\] from him. The minimum length of the plane mirror required is [MP PMT 1993; DPMT 2001]

A.            \[180cm\]                              
B.            \[90cm\]
C.            \[85cm\]                                
D.            \[170cm\]
Answer» C.            \[85cm\]                                


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