Subject :NSO Class : Class 9
Steady rain, giving 5 mm an hour, turns suddenly into a downpour 20 mm an hour and the speed of rain drops falling vertically on to a flat roof simultaneously doubles. The pressure exerted by the falling rain on the roof rises by a factor of
A2
B2√2
C4
D8
Ans 1: (Master Answer)
Class : Class 1
The correct answer is D.