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

Engineering

Physics

Physical Quantities

Question

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 :

7.5 × 10^–3 m

5.0 × 10^–3 m

3.6 × 10^–3 m

9.6 × 10^–3m

LiveFree JEE Main Previous Year Online Papers Live Free JEE Advance Previous Year Online Papers

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

Diameter = 8 × 10^–3 m

v = 0.4 m/s

$v = \sqrt{u^{2} + 2 gh}$

$= \sqrt{{(0.4)}^{2} + 2 \times 10 \times 0.2}$

= 2 m/s

A₁v₁ = A₂v₂

$π (\frac{8 \times 10^{- 3}}{4}) \times 0.4 = π \times \frac{d^{2}}{4} \times 2$

d ≈ 3.6 × 10^–3 m

Please subscribe our Youtube channel to unlock this solution.