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Aptitude - Clock Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Clock. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - Find the angle between the hour hand and the minute hand of a clock when the time is 3.25.
Answer : C
Explanation
Angle traced by the hour hand in 12 hours = 360° Angle traced by it 3 hr 25 minutes i.e 41/12 hrs = 360°/12 * 41/12 = 105°/2 Similarly, angle traced by min hand in 60 mins = 360° Angle traced by it in 25 mins = 3600/60 * 25 = 150° ∴ Angle between hour hand and minute hand = 150° ? 105°/2 = 95°/2
Q 2 - At what time between 4 and 5 o' clock will the hands of a clock be at right angle?
Answer : B
Explanation
At 4 o' clock, the minute hand is 20 minute spaces behind the hour hand. Now, when the two hands are at right angles, they are fifteen min spaces apart. So, they are at right angles in following two cases. Case I ? When the minute hand is 15 min spaces behind the hour hand. In this case, min hand will have to gain (20-15) = 5 min spaces. = (60/55)*5 = 60/11 ∴ They are at right angle at 60/11 minutes past 4. Case II ? When the minute hand is 15 minute spaces ahead of the hour hand. In this case the minute hand will have to gain (20+15) = 35 min spaces. = (60/55)*35 = 420/11 min ∴ They are at right angles at 420/11 min past 4.
Q 3 - The minute hand of a clock overtakes the hour hand at interval of 65 minutes of the correct time. How much a day does the clock gain or lose?
Answer : C
Explanation
In a correct clock, the minute hand gains 55 min spaces over the hour hand in 60 minutes. To be together again, the minute hand must gain 60 minutes over the hour hand. 55 min are gained in 60 min 60 min are gained in (60/55)*60 = 720/11 But they are together after 65 min. ∴Gain in 65 min = (720/11 ? 65) = 5/11 Gain in 24 hours = [5/11 * (60*24)/65] min = 440/43 min = 10.23 minutes. ∴The clock gains 10.23 minutes in 24 hours.
Q 4 - A clock is set comfortable Am. The check loses 16 minutes in 24 hours. What will be the genuine time when the clock shows 10 pm on fourth day?
Answer : A
Explanation
Time from 5am on a day to 10 pm on fourth day= 89 hours Presently 23hrs. 44min. of this clock= 24 hours of right clock. ∴ 356/15 hrs of this clock= (24*15/356*89) hrs. Of right clock. = 90 hrs of right clock. Along these lines, the right time is 11 pm.
Q 5 - An exact check demonstrates 8 o'clock in the morning . through what number of degrees will the hour hand pivot when the clock indicates 2 O' check toward the evening?
Answer : D
Explanation
Angle followed by the hour hand in 6 hours = (360/12*6)°= 180°
Q 6 - The edge between the moment hand and the hour hand of a clock when the time is 4.20, is:
Answer : B
Explanation
Angle followed by hour hand in 13/3 hrs. =(360/12*13/3)°= 130° Point followed by min. hand in 20 min. = (360/60*20)°= 120° ∴ Required point = (130-120)°= 10°
Answer : C
Explanation
In 12 hours, the hands concur or are in inverse heading 22 times. ∴ In 24 hours, the hands concur or are in inverse heading 44 Times each day.
Answer : C
Explanation
In 12 hours, they are at right point 22 times. ∴ In 24 hours , they are at right point 44 times.
Q 9 - At what somewhere around 9 and 10 o'clock will the hands of a watch be together?
Answer : C
Explanation
To be as one somewhere around 9 and 10 o'clock, the moment hand needs to pick up 45 min. spaces. 55 min. space are picked up in 60 min. 45 min. space are picked up in (60/55*45) min. or 540/11 min. ∴ The hands are as one at 540/11 min. past 9.
Q 10 - A watch which pick up consistently is 2 minutes moderate at twelve on Monday What's more, is 4 min.48 sec quick at 2 p.m. on the next Monday. At the point when Is it true that it was right?
Answer : B
Explanation
Time structure 12 p.m. on Monday to 2 p.m. on the accompanying Monday =7 days 2 hours =170 hours. ∴ The watch gains(2+24/5)min. on the other hand 34/5 min. in 170 hrs. Now,34/5 min. are picked up in 170 hrs. ∴ 2 min. are picked up in (170(5/34*2) hrs=50 hrs. Along these lines, the watch is right 2 days 2 hour after 12 p.m. on Monday i.e.it will be right at 2 p.m. on Wednesday.