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If the earth is at one-fourth of its pre...

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

A

Half the present year

B

One-eighth the present year

C

One-fourth the present year

D

One-sixth the present year

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The correct Answer is:
B
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ERRORLESS -GRAVITATION-Kepler’s Laws of Planetary Motion
  1. Orbit of a planet around a star is

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  2. If a body describes a circular motion under inverse square field, the ...

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  3. If the earth is at one-fourth of its present distance from the sun, th...

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  4. The earth revolves about the sun in an elliptical orbit with mean radi...

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  5. Venus looks brighter than other planets because

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  6. A planet moves around the sun. at a given point P, it is closest fro...

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  7. The orbital speed of Jupiter is

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  8. Two planets move around the sun. The periodic times and the mean radii...

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  9. According to Kepler's second law, the radius vector to a planet from t...

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  10. The largest and the shortest distance of the earth from the sun are r(...

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  11. The rotation period of an earth satellite close to the surface of the ...

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  12. A satellite of mass m is in a circular orbit of radius r round the Ear...

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  13. According to Kepler, the period of revolution of a planet ( T ) and it...

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  14. A planet revolves around sum whose mean distance is 1.588 times the me...

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  15. A satellite A of mass m is at a distance of r from the centre of the e...

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  16. The earth E moves in an elliptical orbit with the sun S at one of the ...

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  17. The time of revolution of planet A round the sun is 8 times that of an...

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  18. If the radius of earth's orbit is made 1/4, the duration of an year wi...

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  19. The motion of planets in the solar system is an exmaple of the conserv...

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  20. If mass of a satellite is doubled and time period remain constant the ...

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