Water is flowing continuously from a tap having an internal diameter

Water is flowing continuously from a tap having an internal diameter 8×10-3 m. The water velocity as it leaves the tap is 0.4 ms-1. The diameter of the water stream at a distance 2×10-1 m below the tap is close to

  1. 7.5 × 10-3 m
  2. 9.6 × 10-3 m
  3. 3.6 × 10-3 m
  4. 5.0 × 10-3 m

Answer

The correct option is C.