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What fraction of a clockwise revolution does the hour hand of a clock turn through, when it goes from 5 to 11?
- a)1/2
- b)More than 1/4
- c)3/4
- d)none of these
Correct answer is option 'A'. Can you explain this answer?
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What fraction of a clockwise revolution does the hour hand of a clock ...
When it moves from 12 to 6, it moves two right angles, that is, 180�. This is 180/360 = � of one revolution. When the hour hand goes from 3 to 9, it moves or rotates by two right angles, that is 180�. When the hour hand of the clock goes from 4 to 7, it rotates by 1 right angle, that is 90�
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What fraction of a clockwise revolution does the hour hand of a clock ...
To determine the fraction of a clockwise revolution the hour hand of a clock turns through when it goes from 5 to 11, we need to consider the total number of hours in a complete revolution of the clock.
A complete revolution of a clock represents 12 hours. Therefore, each hour mark on the clock represents 1/12th of a revolution.
Now, let's calculate the number of hours between 5 and 11:
From 5 to 6: 1 hour
From 6 to 7: 1 hour
From 7 to 8: 1 hour
From 8 to 9: 1 hour
From 9 to 10: 1 hour
From 10 to 11: 1 hour
So, there are a total of 6 hours between 5 and 11.
To find the fraction of a revolution, we divide the number of hours by the total number of hours in a revolution:
Fraction = Number of hours / Total number of hours
Fraction = 6 / 12
Simplifying the fraction, we get:
Fraction = 1/2
Therefore, the hour hand of a clock turns through 1/2 of a clockwise revolution when it goes from 5 to 11. Hence, the correct answer is option A) 1/2.
A complete revolution of a clock represents 12 hours. Therefore, each hour mark on the clock represents 1/12th of a revolution.
Now, let's calculate the number of hours between 5 and 11:
From 5 to 6: 1 hour
From 6 to 7: 1 hour
From 7 to 8: 1 hour
From 8 to 9: 1 hour
From 9 to 10: 1 hour
From 10 to 11: 1 hour
So, there are a total of 6 hours between 5 and 11.
To find the fraction of a revolution, we divide the number of hours by the total number of hours in a revolution:
Fraction = Number of hours / Total number of hours
Fraction = 6 / 12
Simplifying the fraction, we get:
Fraction = 1/2
Therefore, the hour hand of a clock turns through 1/2 of a clockwise revolution when it goes from 5 to 11. Hence, the correct answer is option A) 1/2.
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What fraction of a clockwise revolution does the hour hand of a clock ...
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