A stone is dropped into a lake from a tower 500 metre high. The sound of the splash will be heard by the man approximately after :

A stone is dropped into a lake from a tower 500 metre high. The sound

1.	A stone is dropped into a lake from a tower 500 metre high. The sound of the splash will be heard by the man approximately after :
Answer» 10 seconds 14 seconds 21 seconds 11.5 seconds. Solution :t = `sqrt((2H)/(g) ) + (H)/(v)` where v = 330 m/s is speed of sound ` = sqrt((2 xx 500)/(10) ) + (500)/(330) = 10 + 1.5 = 11. 5 ` seconds. correct choice is (d) .

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A stone is dropped into a lake from a tower 500 metre high. The sound of the splash will be heard by the man approximately after :

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