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CBSE Class 12-science Answered

if we want to see our full image  in plane mirror then what will be the length of mirror  
Asked by narenderduhan08 | 14 Oct, 2018, 08:56: PM
answered-by-expert Expert Answer
Figure shows the how reflected image of a person is seen by himself.
 
ΔABC and ΔADE are similar triangles.
 
AD = 2×AB because we know AB = BD.
 
Hence BC = (1/2)×DE.
Hence to view our full image in plane mirror, required height of the mirror is half of our height.
Answered by Thiyagarajan K | 15 Oct, 2018, 03:31: AM

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