Category :
3rd Class
Time
Clocks:
- A clock has two hands : (i) long hand and (ii) short hand
- The long hand is called minute hand and the short hand is called hour hand.
- Some clocks have a third hand called second hand. It moves much faster than the other two hands
- The dial of the clock is divided into 12 equal divisions marked as 1,2,3,4,5,6,7,8,9,10,11 and 12
- 1 hour = 60 minutes I minute = 60 seconds
- \[\therefore \]1 hour = 60 \[\times \] 60 = 3600 seconds
- The hour hand takes 12 hours to complete one round.
- The minute hand takes 1 hour to complete one round.
Some conversions:
- 1 day = 24 hours; 1 week = 7 days; 1 month = 4 weeks; 1 year = 12 months 1 year = 52 weeks; 1 year = 365 days
- The time from 12 midnight to 12 noon is noted as A.M. (Anti Meridian) and the time form
12 noon to 12 midnight as P.M. 4Post Meridian).
