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