When a plane mirror is placed horizontally on a level ground at a distance of from the foot of a tower, the top of the tower and its image in the mirror subtend an angle of at the . The height of the tower will be |
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a) |
30 |
b) |
60 |
c) |
90 |
d) |
120 |

When a plane mirror is placed horizontally on a level ground at a distance of from the foot of a tower, the top of the tower and its image in the mirror subtend an angle of at the . The height of the tower will be |
|||||||

a) |
30 |
b) |
60 |
c) |
90 |
d) |
120 |

127