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Question

What fraction of a clockwise revolution does the hour hand of a clock turn through, when it goes from,

(a)3to9


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Solution

Find the fraction of a clockwise revolution

As we know,

In watch, hour hand travel 12 hours to complete one revolution.

When hour hand goes from 3to9. Then, hour hand travels total 6 hours.

12hours=1Revolution6hours=112×6=12Revolution

Hence, when hour hand goes from 3to9. Then, it is equivalent to 12 of a revolution.


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