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Keeping the mass of the earth constant, ...

Keeping the mass of the earth constant, if the radius of the earth is made 80% of its present value , the acceleration due to gravity on the earth's surface would

A

remain unchanged

B

decrease by 36% (approx.)

C

increase by 36% (approx.)

D

increase by 56% (approx.)

Text Solution

Verified by Experts

The correct Answer is:
D
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CHHAYA PUBLICATION-NEWTONIAN GRAVITATION AND PLANETARY MOTION-EXERCISE (Multiple choice Questions)
  1. The mass of the moon is 1/(80) th of that of the earth and the radius...

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  2. If the diurnal motion of the earth ceases all on a sudden , then the v...

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  3. Keeping the mass of the earth constant, if the radius of the earth is ...

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  4. If the radius of the earth is R , the height above the surface of the ...

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  5. If the change in the acceleration due to gravity (g) at an altitude h ...

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  6. The acceleration due to gravity on the surface of the earth is 9.8 m*s...

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  7. A rocket is projected vertically upwards from the surface of the eart...

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  8. If one moves from the equator to the pole, the value of g

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  9. If the radius of the earth were to shrink by 1% , its mass remaining ...

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  10. If G is universal gravitational constant and g is acceleration due to ...

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

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

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

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

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

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

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

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

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

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

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