where will the hand of a clock stop if it starts at 12 and make 1/4 of a revolution anti clockwise
Answers
Answer:
If the hand of the clock starts at 12 and makes 1/2 of a revolution clockwise, then it will rotate by 180o and hence, it will stop at 6.
The hand of the clock will stop at 9.
Where will the hand of a clock stop if it starts at 12 and make 1/4 of a revolution of anticlockwise ?
Solution : ∵ one revolution = 360°
∴ 1/4 of a revolution = 360°/4 = 90°
We also know, 360° = 12 hours
⇒ 1° = 12/360 hour = 1/30 hour
⇒ 90° = 90 × 1/30 = 3 hours
Hence, hand of clock will move 3 hours anticlockwise i.e., 12 - 3 = 9
Therefore the hand of the clock will stop at 9 if it starts at 12 and make 1/4 of a revolution anticlockwise.
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