Ch.18 :- Clocks :- Exercise 1


1. Find at what time between 8 and 9 O’clock will the hands of a clock be in the same straight line but not together?
(a) 1010/11 minute past 8
(b) 5010/11 minute past 8
(c) 1012/11 minute past 8
(d) 10 minute past 8

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2. At what time between 3 and 4 O’clock will the hands of a clock coincide?
(a) 15 minute past 3
(b) 1510/11 minute past 3
(c) 1012/11 minute past 3
(d) 164/11 minute past 3

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3. A clock is set right at 8 am. The clock gains 10 minute in 24 hours. What will be the right time when the clock indicates 1 pm on the following day?
(a) 11.40 pm
(b) 12.48 pm
(c) 12 pm
(d) 10 pm

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4. At what time between 4 and 5 O’clock will the hands of a clock be at right angle?
(a) 30 minute past 4
(b) 163/4 minute past 4
(c) 382/11 minute past 4
(d) 33 minute past 4

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5. At what time between 5 and 6 are the hands of a clock coincident?
(a) 22 minute past 5
(b) 30 minute past 5
(c) 228/11 minute past 5
(d) 273/11 minute past 5

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6. At what time between 9 and 10 O’clock will the hands of a watch be together?
(a) 45 minute past 9
(b) 50 minute past 9
(c) 491/11 minute past 9
(d) 482/11 minute past 9

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7. How many times do the hands of a clock point towards each other in a day?
(a) 24
(b) 20
(c) 12
(d) 22

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8. At what angle the hands of a clock are inclined at 15 minute past 5 ?
(a) 721/2°
(b) 671/2°
(c) 581/2°
(d) 64°

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