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When a ceiling fan is switched on, it makes 10 revolutions in the first 3s

When a ceiling fan is switched on, it makes 10 revolutions in the first 3s.Assuming a uniform angular acceleration,how many rotation it will make in the next 3s?

Options

(a) 10
(b) 20
(c) 30
(d) 40

Correct Answer:

30

Explanation:

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