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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 | Toppr 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

1 Answer - 5876 Votes

3537

Answer Key : (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.



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