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A planet has same density and same accel...

A planet has same density and same acceleration due to gravity as of earth and universal gravitational constant G is twice of earth. The ratio of their radii is

A

`1:4`

B

`1:5`

C

`1:2`

D

`3:2`

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Verified by Experts

The correct Answer is:
C
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CHHAYA PUBLICATION-NEWTONIAN GRAVITATION AND PLANETARY MOTION-EXERCISE (Multiple choice Questions)
  1. If G is universal gravitational constant and g is acceleration due to ...

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  2. At what altitude (h) above the earth's surface would the acceleration ...

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  3. A planet has same density and same acceleration due to gravity as of e...

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  4. The escape velocity from the earth is ve. If both the mass and the rad...

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  5. The escape velocity of a particle of mass m is

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  6. The value of the escape velocity of a body thrown vertically upwards f...

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  7. The value of the escape velocity from the earth is ve. If the radius ...

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  8. The escape velocity of a planet is ve. From this planet a particle is...

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  9. Escape speed on the surface of a planet varies with the mass m of a bo...

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  10. The escape velocity of a body on the surface of earth is 11.2 km/ s. I...

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  11. Keeping the mass constant , if the radius of the earth is halved, then...

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  12. The weight of a body on the surface of the earth is W. The weight of t...

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  13. A planet in elliptical orbit around a star moves form the point in its...

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  14. The height of a geostationary satellite from the surface of the earth...

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  15. Two satellite of masses m1 and m2 (m1 gt m2) are revolving around the ...

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  16. Two satellites A and B are revolving along circular paths of the same...

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  17. Two planet are revolving around the sun. their time periods of revolut...

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  18. The centripetal force necessary for an artificial satellite revolving ...

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  19. The radii of the orbits of two satellite A and B revolving around a p...

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  20. In the case of the motion of a planet

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