Question

The flow rate of water from a tap of diameter 1.25 cm is 3 L per min. The coefficient of viscosity of water is $10 ^ { - 3 } \mathrm { pa }$ s. The nature of the flow is

• A. Unsteady
• B. Turbulent
• C. Laminar
• D. None of these

Answer 1

Answer: (B)

Turbulent

Answer 2

Here diameter of the tap,

$\mathrm { D } = 1.25 \mathrm {~cm} = 1.25 \times 10 ^ { - 2 } \mathrm {~m}$

Density of water $\rho = 10 ^ { 3 } \mathrm {~kg} \mathrm {~m} ^ { - 3 }$

Coefficient of viscosity

Volume of water flowing out per second is

Reynolds number is given by

$= 5095 > 2000$

Thus, the flow will be turbulent.