The second hand on the clock circles 420 times in 7 hours.
its least count will be one second
one second
It takes the minute hand one hour to do this, and it takes the hour hand twelve hours to do it.
The hour hand takes twelve hours for a complete circle, 360 degrees. Twelve hours is 12x60 minutes = 720 minutes. If 360 degrees takes 720 minutes, 1 degree takes 720 divided by 360. 720/360 = 2 minutes.
The second hand on the clock circles 420 times in 7 hours.
23
its least count will be one second
Minute hand will rotate 1440 times in 24 hours.
one second
The big hand overtakes the little hand 22 times in 24 hours.
It could be four times per day: 9 AM, 9 PM, 3 AM, and 3 PM. Note: The question as stated is false and would likely cause controversy if it was on an important exam. The question should be "If the minute hand is pointing to the twelve and the hour hand is perpendicular to the minute hand, what times could it be?"
Because it points at the seconds? hours minutes seconds
It takes the minute hand one hour to do this, and it takes the hour hand twelve hours to do it.
In 12 hours, the min hand will just about cross 12 times.
The hour hand takes twelve hours for a complete circle, 360 degrees. Twelve hours is 12x60 minutes = 720 minutes. If 360 degrees takes 720 minutes, 1 degree takes 720 divided by 360. 720/360 = 2 minutes.
It takes twelve hours for the hour hand to move 360 degrees In half an hour the hour hand moves 15 degrees