A clock when seen in a mirror shows 11:25. What is the correct time?
Answer: B
Shortcut is to subtract the given time from 11:60. Thus the correct time is 11:60 – 11:25 = 0:35 and 0:35 mean 12:35 So, Answer is 12:35
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At what time between 4 and 4.59 will the hands of a watch point in opposite directions?
Answer: D
At 4 o'clock, the hands of the watch are 20 min. spaces apart.
To be in opposite directions, they must be 30 min. spaces apart.
Minute hand must gain 50 min. spaces.
55 min. spaces are gained in 60 min.
50 min. spaces are gained in 60/55 x 50 = 54 (6/11) min
Required time = 54 6/11 min past 4
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At what time after 9 am, do hands of clock make a right angle?
Answer: A
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A clock is set right at 5 a.m. The clock loses 16 minutes in 24 hours.What will be the true time when the clock indicates 10 p.m. on 4th day?
Answer: A
Time from 5 am. on a day to 10 pm. on 4th day = 89 hours.
Now 23 hrs 44 min. of this clock = 24 hours of correct clock.
356/15 hrs of this clock = 24 hours of correct clock
89 hrs of this clock = (24 x 31556 x 89) hrs of correct clock.
= 90 hrs of correct clock.
So, the correct time is 11 p.m.
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At what time between 3 & 4 will the hands of a watch point in opposite directions?
Answer: C
At 3 o'clock, the hands of the watch are 15 min. space apart.
To be in opposite directions, they must be 30 min. spaces apart.
Minute hand must gain 45 min. space (15 + 30 min)
55 min spaces are gained in 60 min.
45 min. spaces would be gained in (60/55 × 45) min.
Required time = 49 1/11 min. past 3.
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A correct clock shows 9 o'clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 3 o'clock in the afternoon?
Answer: D
Hour hand traverses 30° per hour.
For 6 hours, 6 x 30 = 180°
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At what angle the hands of a clock are inclined at 40 minutes past 2?
Answer: B
At 2 o’ clock, the hour hand is at 60° from the vertical.
In 40 minutes,
Hour hand = 60 + 40 x (0.5) = 80° (The hour hand moves at 0.5 dpm)
Minute hand = 40 x (6) = 240° (The minute hand moves at 6 dpm)
Difference or angle between the hands = 240 - 80 = 160°
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An accurate clock shows 10 o'clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 6 o'clock in the evening?
Answer: D
Hour hand travels 30 degree per hour.
For, 8 hours, 8 x 30 = 240
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How many times do the hands of a clock are in perpendicular to each other in a day?
Answer: C
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At what angle the hands of a clock are inclined at 15 minutes past 5?
Answer: B
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