The clock represents two things- minutes and hour. The smaller one is hour hand . The larger one is minute hand. The minute hand makes one complete rotation (360°) in 60 minute . The angle traced by minute hand in 1 min = 360/60= 6° The hour hand makes one complete rotation (360°) in 12 hours. The angle traced by hour hand in 1 hour = 360/12= 30° The angle traced by hour hand in 1 min = 30/60= 1/2° The hands of the clock are opposite to each other for 11 times in 12 hours and 22 times in a day. Between 5 and 7 the hands are at opposite direction only once at 6’ O clock The hands of the clock coincide each other for 11 times in 12 hours and 22 times in a day. Between 11 and 1 the hands coincide only once at 12’ O clock The hands are at right angles 44 times in a day Angle between hour hand and minute hand is 30H - 11/2 M H - hour , M - Minute If the angle exceeds 180° subtract from 360° ignore the...
Kerala Psc Examination Previous Questions and Notes