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

(A) \dfrac{\pi }{30} 𝑟𝑎𝑑/s

(B) \dfrac{\pi }{2} 𝑟𝑎𝑑/s

(C) {\pi } 𝑟𝑎𝑑/s

(D) \dfrac{\pi }{60} 𝑟𝑎𝑑/s

**Answer :** option (A)

**Solution :**

with
no comment

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

(A) \dfrac{\pi }{30} 𝑟𝑎𝑑/s

(B) \dfrac{\pi }{2} 𝑟𝑎𝑑/s

(C) {\pi } 𝑟𝑎𝑑/s

(D) \dfrac{\pi }{60} 𝑟𝑎𝑑/s

**Answer :** option (A)

**Solution :**