Question

The ratio of angular velocity of rotation of minute hand of a clock with the angular velocity of rotation of the earth about its own axis is

• A. 12
• B. 6
• C. 24
• D. None of these

Answer 1

Answer: (C)

24

Answer 2

$\omega_{Minutehand} = \frac{2\pi}{60}\frac{rad}{\min}$and

$\omega_{Earth} = \frac{2\pi}{24}\frac{Rad}{hr} = \frac{2\pi}{24 \times 60}\frac{rad}{\min}$ ∴ $\frac{\omega_{Minutehand}}{\omega_{Earth}} = 24:1$