Clock angle problem facts – UGC NET Question

Statements A, B, C and D are all standard facts used in clock angle questions. A and B give the angular speeds of the minute and hour hands. C is correct because at 3:00 the hands are exactly 90 degrees apart. D is true since the hands overlap once between 2:00 and 3:00. E is false because the hands are perpendicular 22 times in 12 hours, not 12 times. Therefore A, B, C and D only are correct.

Option A:
Option A is incomplete since it omits D and therefore does not mention the key overlap fact used in many clock problems.

Option B:
Option B is incomplete because it drops B (the hour hand speed), which is essential for calculations.

Option C:
Option C is correct because it lists all the correct statements about hand speeds, angles and coincidences, while excluding E, which undercounts the perpendicular occurrences.

Option D:
Option D is wrong as it omits A (true) and therefore does not include all correct statements.