A cylinder of height 20.05 m is completely filled with water. The velocity of efflux of water through a small hole on the side wall of the cylinder 5 cm above its bottom, is :
1
9.8 m/s
2
20 m/s
3
4.9 m/s
4
none of these
A cylinder of height 20.05 m is completely filled with water. The velocity of efflux of water through a small hole on the side wall of the cylinder 5 cm above its bottom, is :