If the earth is at one fourth of its present distance from the sun, the duration of the year will be

Options :
  1. 1/2 the present year
  2. 1/4 to present year
  3. same as present
  4. 1/8 the present year


Answer and Explanation :-

Answer: Option 4

Explanation:

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Responses


By: Bhuvan On: Apr/19/2015

- Total distance earth travel in 1 year ,let say d = 2(pi)r , where r : distance from sun to earth
- If the current distance from sun to earth is reduced by 1/4 then new distance = d` = 2(pi)(r/4) = d/4
- time = distance/speed.
If we make a assumption that speed of earth (revolution) remains constant , then the new time taken is 1/4th of earlier time. ( 1/4 of a year)
- So , I conclude option 2 is correct.

Note : I`m not a physicist. There is high chance my assumption might be wrong.

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