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When a plane mirror AB is placed horizon...

When a plane mirror AB is placed horizontally on level ground at a distance of 60 metres from the foot of a tower, the top of the tower and its image in the mirror subtends, an angle of `90^(@)` at B. The height of the tower is :

A

30 metre

B

60 metre

C

90 metre

D

120 metre

Text Solution

Verified by Experts

The correct Answer is:
B
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