Question icon
Electrostatics

This is waves problem.
Explain the answer.
Answer is 2nd option.

Question image for This is waves problem. Explain the answer. Answer
Profile image of raju nagula
8 Years agoGrade
Answers icon

1 Answer

Profile image of Khimraj
8 Years ago
time taken by stone to reach in water 
t1 = \sqrt{2h/g} = \sqrt{2*300/9.8} = 7.82 s
time taken by splash to reach at top of tower
t2= h/v = 300/340 = 0.88 s
So total time = t1 + t2 = 8.7 s
Hope it clears. If you like anser then please approve it.