At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but, not together?
Answer: Option E
When the hands of the clock are in the same straight line but not together, they are 30 minute spaces apart.
At 7 o'clock, they are 25 min. spaces apart.
Minute hand will have to gain only 5 min. spaces.
55 min. spaces are gained in 60 min.
At what time between 5.30 and 6 will the hands of a clock be at right angles?
Answer: Option A
At 5 o'clock, the hands are 25 min. spaces apart.
To be at right angles and that too between 5.30 and 6, the minute hand has to gain (25 + 15) = 40 min. spaces.
The angle between the minute hand and the hour hand of a clock when the time is 4.20, is:
Answer: Option C
Required angle = (130 - 120)º = 10º.
At what angle the hands of a clock are inclined at 15 minutes past 5?
At 3.40, the hour hand and the minute hand of a clock form an angle of:
Angle traced by hour hand in 12 hrs. = 360º.
Angle traced by minute hand in 60 min. = 360º.
Required angle (240 - 110)º = 130º.
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