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Q.

State which surface of a plane mirror reflects most of the light incident on it: the front smooth surface of the back silvered surface?


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a

Back silvered surface

b

Front smooth surface

c

Both refract equally

d

Both reflect no light 

answer is A.

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Detailed Solution

Concept: Plane mirror makes a virtual and erect image
1-A silvered surface is used because silver is  the metal which reflects the most light .
2-  Polished silver is used in a mirror because  it reflects the maximum light incident on it and does not  absorb it.
So the back silvered surface reflects more light than a front smooth surface in a plane mirror.
Hence, the correct option is 1.
 
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