Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A man is observing, from the top of a tower, a boat speeding towards the tower from a certain point 
, withuniform speed. At that point, angle of depression of the boat with the man's eye is 
(Ignore man's height).After sailing for 
seconds towards the base of the tower (which is at the level of water), the boat has reacheda point 
, where the angle of depression is 
. Then the time taken (in seconds) by the boat from 
to reachthe base of the tower is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
d JEE Main 2021
Also
put in 
speed
time taken to reach
Foot from 
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