In an accurate clock, on a period of 2 hours 20 minutes, the minute hand will move over
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UPSC Civil Services preparation
- A$520^ degrees$
- B$320^ degrees$
- C$840^ degrees$Correct
- D$140^ degrees$
Explanation
To solve this, we first convert the total time into minutes. 2 hours is equal to 120 minutes. Adding the extra 20 minutes gives a total of 140 minutes.
The minute hand of a clock completes one full circle of 360 degrees every 60 minutes. Therefore, in one minute, the minute hand moves 6 degrees (360 divided by 60).
To find the total degrees moved in 140 minutes, multiply 140 by 6. This equals 840 degrees. Thus, option C is correct.
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