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The ratio of angular speed of a second-hand to the hour-hand of a watch is 

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The ratio of angular speed of a second-hand to the hour-hand of a watch is 

(A) 3600 : 1 

(B) 720 : 1 

(C) 72 : 1 

(D) 60 : 1

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Answer is (B) 720 : 1

Angular speed of second hand,

ω1 = \(\frac{2\pi}{60}\) (T = 60 seconds)

Angular speed of hour hand

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