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A person standing at the centre of a rec...

A person standing at the centre of a rectangular room is looking into a 1 m long mirror at the opposite end of the room. How much of the painted wall can he see through the 1 m long mirror?

A

1 m

B

2 m

C

3 m

D

4 m

Text Solution

Verified by Experts

The correct Answer is:
C
To see a complete image of the wall in front of a mirror, the length of the mirror must be one third the length of the wall.
Let length of the wall = L
`therefore` Length of the mirror, I= `L/3`
`thereforeL=3xxl=3xx1m`
[`because` length of the mirror= 1m]
or L=3m
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