Clocks and Calendar - Clock Problem
Clocks and Calendar - Clock Problem
Clocks and Calendar - Clock Problem: This concept revolves around the calculation of the angular distance traversed by the different hand of the clock. The different hands of the clock move with different speed.The hour hand takes 12 hours to traverse an angle of 360 degree, and the minute hand completes one rotation in one hour i.e. it covers in 1 hour .
Speed of minute hand = in 1 hour ( 60 min )
= per minute
Speed of hour hand = in 12 hours
= in 1 hour ( 60 min )
=
As they are moving in the same direction
So, the relative speed of minute hand over hour hand will be difference of their speeds
Illustration: At what time immediately after 2 o' clock, do the hands of clocks coincide?
A. 10 minutes 11 seconds. B. 10 minutes 10 seconds. C. 10 minutes 55 seconds. D. 9 minutes 55 seconds.
Answer: C
Solution: At 2 o'clock, the hands of the clock are apart.
The minute hand covers this at a speed of
per minute.
To cover , time required = 1 min
TO cover , time required
minutes
If we convert minutes to seconds, it is equal to
= 55 seconds (approx)
So, the answer is 10 minutes 55 seconds.
At what time immediately after 4 o' clock, do the hands of clocks coincide? | |||
| Right Option : D | |||
| View Explanation | |||
At what time between 5 and 6 are the hands of a clock coincident? | |||
| Right Option : D | |||
| View Explanation | |||
At what time immediately after 5 o' clock, do the hands of clocks coincide? | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
