MCQ
The power of a windmill having blade area equal to $A$ and wind velocity equal to $v$ is $(\rho$ is density of air$):$
- ✓$\frac{\text{A}\rho\text{v}^3}{2}$
- B$\frac{\text{A}\rho\text{v}^2}{2}$
- C$\frac{\text{A}\rho\text{v}}{2}$
- D$\text{A}\rho\text{v}^3$
