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When a plane mirror is placed horizontal...

When a plane mirror is placed horizontally on level ground at a distance of 60 m from the foot of a tower, the top of the tower and its image in the mirror subtend and angle of `90^@` at the eye. The height of the tower is

A

30 metres

B

60 metres

C

90 metres

D

120 metres

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • 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

  • At a distance 2h m from the foot of a tower of height h m,the top of the tower and a pole at the top of the tower subtend equal angles height of the pole should be

    A
    (5h)/3m
    B
    (4h)/3m
    C
    (7h)/5m
    D
    (3h)/2m

  • At a distance 2h m from the foot of a tower of height h m,the top of the tower and a pole at the top of the tower subtend equal angles height of the pole should be

    A
    (5h)/3m
    B
    (4h)/3m
    C
    (7h)/5m
    D
    (3h)/2m

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