Question

In a long room water pipe line is going horizontal at the floor of room and ceiling (roof) of the room is flat and 5 m above the floor. From the small hole in the pipe water is coming out in all possible directions with a speed of 20 m/s. Assuming ideal conditions for the motion of water drops in space of room and dimensions of room are large enough so that water can not hit the side walls, the maximum area of roof which can be wet by water coming out from pipe is – (g = 10m/s²)

• A. 800 m²
• B. 3768 m²
• C. 942 m²
• D. None of these

Answer 1

Answer: (C)

942 m²

Answer 2

Area = $\frac{\pi R^{2}}{4}$

where R = Range when maximum height = 5 m