Solved: PHYSICS Question for NEET

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The angular speed of the seconds needle in a mechanical watch is:

$\frac{\pi}{30}$ rad/s

$2\pi$ rad/s

$\pi$ rad/s

$60\pi$ rad/s

Definition: Angular speed ( $\omega$ ) is defined as the angle covered per unit time. For a complete revolution, the angle covered is $2\pi$ radians.
Time Period: The time period ( $T$ ) is the time taken to complete one full revolution. For the seconds needle of a watch, it takes 60 seconds to complete one circle ( $T = 60\text{ s}$ ).
Calculation: Using the formula $\omega = \frac{2\pi}{T}$ : $\omega = \frac{2\pi}{60} = \frac{\pi}{30} \text{ rad/s}$ .

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