The angular displacement of the hour hand in 2 hr is

120^{o}

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60^{o}

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π / 6

radian

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π / 2

radian

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Solution

The correct option is A $120^{o}$
The angular displacement of the hour hand is 360 deg in 12 hours and so it is 30 deg per hour. Therefore, in two hours the angular displacement of the hour hand is 60 deg in 2 hours.

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