If earth’s rotational motion increases by 12%, then the relation between a day and hours will be
(a)
12 hrs = 1 day
(b)
20
hrs = 1 day
(c)
21
hrs =1 day
(d)
None of these
If earth’s rotational motion increases by 12%, then the relation between a day and hours will be
(a)
12 hrs = 1 day
(b)
20 hrs = 1 day
(c)
21hrs =1 day
(d)
None of these
Question ID - 56905 | SaraNextGen Top Answer
If earth’s rotational motion increases by 12%, then the relation between a day and hours will be
(a)
12 hrs = 1 day
(b)
20 hrs = 1 day
(c)
21hrs =1 day
(d)
None of these
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If earth’s rotational motion increases by 12%, then the relation between a day and hours will be |
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|
(a) |
12 hrs = 1 day |
(b) |
20 |
(c) |
21 |
(d) |
None of these |
|
1 Answer
127 votes
Answer Key / Explanation : (c) -
Earth takes 1 day or 24 hrs. to complete one rotation. Let the time taken to complete one rotation with increased speed be 
hrs.
Since the time taken is inversely proportional to speed, we have:
100:112::
or 
1day = 21
hrs.
127 votes
Answer Link
127