13. At 3.40, the hour hand and the minute hand of a clock form an angle of: -
A.120⁰ B.130⁰
C.125⁰ D.135⁰
Answer: 130⁰
Explanation: Angle traced by hour hand in 12 hrs = 360°
Angle traced by it in 11/3 hrs =(360/12) * (11/3) = 100°.
Angle traced by minute hand in 60 mm. = 360°.
Angle traced by it in 40 mm = (360/60) * 40 = 240°.
Required angle = (240 - 110)° = 130°.
