A ball is projected upwards from the foot of a tower. The ball crosses the top of the tower twice after an interval of 6 s and the ball reaches the ground after 12 s.The height of the tower is (take , g= 10 ms⁻² )

Options

(a) 120 m
(b) 135 m
(c) 175 m
(d) 80 m

Correct Answer:

135 m

Explanation:

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