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Select and write the most appropriate answer from the given alternatives for each subquestion
The masses and radii of two planets A and B are both in the ratio `1:2`.The ratio `g_A//g_B` of the gravitational acceleration on the planets is
(a)`1:8`
(b)`1:2`
(c)`2:1`
(d)`8:1`

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CHETANA PUBLICATION-GRAVITATION-EXERCISE
  1. Two satellites Aand B move round the earth in the same orbit. The mass...

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  2. The earth (mass=6 xx 10^24 kg) revolves around the Sun with angular ve...

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  3. For a satellite orbiting close to earth's surface, expression for peri...

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  4. The height of a communication satellite from the earth's surface is ab...

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  5. Persons sitting in an artificial satellite orbiting around the earth h...

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  6. A geostationary satellite has an orbital period of

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  7. The value of acceleration due to gravity is maximum at

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  8. The gravitational potential due to the earth is minimum at

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  9. Dimensions of gravitional potential are

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  10. Select and write the most appropriate answer from the given alternativ...

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  11. Select and write the most appropriate answer from the given alternativ...

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  12. Draw a diagram showing different stages of projection for an artificia...

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  13. The escape velocity of a body from the surface of the earth is 11.2 km...

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  14. State Kepler's law of orbit and law of equal areas.

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  15. Derive an expression for binding energy of a body at rest on the earth...

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  16. State the SI unit and obtain the dimensions of the universal gravitati...

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  17. Derive an expression for the acceleration due to gravity at a depth d ...

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  18. What is a geostationary satellite? State its two uses.

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  19. Obtain an expression for critical speed of a satellite

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  20. State the factors on which escape speed of a satellite depend

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