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When a plane mirror is placed horizontal...

When a plane mirror is placed horizontally ground at a distance of 60 m from the base of a tower, then the top of the tower and its image in the mirror subtend an angle of `90^(@)` at the corner of the mirror nearer to the base of tower. The height of the tower is

A

30 m

B

60 m

C

90 m

D

120 m

Text Solution

Verified by Experts

The correct Answer is:
B
`tan 45^@ =(h)/(60) rArr h=60m`
.
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