Multiple choice

In an accurate clock, in a period of 2 hours 20 minutes (140 minutes), the minute hand will sweep an angle of

  1. 520o

  2. 320o

  3. 840o

  4. 140o
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The minute hand of a clock completes a full 360 degree rotation in 60 minutes. Therefore, it moves at a rate of 6 degrees per minute. In 140 minutes, the total angle swept is 140 * 6 = 840 degrees.

AI explanation

The minute hand of a clock sweeps 6 degrees per minute. For a period of 140 minutes, the total angle swept is 140 multiplied by 6, yielding 840 degrees.

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