50 men took a dip in a water tank 40 m long and 20 m broad on a religious day
50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 4 m3, then the rise in the water level in the tank will be
- 20 cm
- 25 cm
- 35 cm
- 50 cm
Answer
Displacement of water by 1 man = 4 m3
Total volume of water displaced by 50 men = (4 x 50) m3 = 200 m3
Rise in water level in the tank is same as the height of the volume of cuboid.
Volume = Length x Breadth x Height
Rise in water level = 200/(40 x 20) = 0.25 m or 25 cm
The correct option is B.