A man sits in an optician's chair, looking into a plane mirror which is 2 m away from him and views the image of a chart which faces the mirror and is 50 cm behind his head. How far away from his eyes does the chart appear to be?
Man and the mirror distance= 2 cm
Man and the chart distance = 50 cm = 0.5 m
Chart and mirror distance = 0.5 m + 2 m = 2.5 m
Mirror and the image of the chart distance = 2.5 m
Now, man and the image of chart distance
= man and the mirror distance + mirror and the image of the chart distance
= 2 m + 2.5 m
= 4.5 m