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  4. A person's eye level is 1.5 m. He stands in front of 0.3 m long plane mirror which is 0.8 m above the ground. The length (in cm ) of the image he sees of himself is ?

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Q. A person's eye level is $1.5\, m$. He stands in front of $0.3\, m$ long plane mirror which is $0.8\, m$ above the ground. The length (in $cm$ ) of the image he sees of himself is ?

Ray Optics and Optical Instruments

Solution:

image
Here $B C=E D-(E B+D C)$ (which is in the field of view)
$\Rightarrow 1.5-(0.8+0.1) $
$\Rightarrow 0.6 \,m$