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The depth at which the value of g become...

The depth at which the value of `g` becomes `25%` of that at the surface of the earth is (in `KM`)

A

4800

B

2400

C

3600

D

1200

Text Solution

Verified by Experts

The correct Answer is:
A
`g.=g(1-d/R)` Given `g.=25/100g`
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NARAYNA-GRAVITATION-EXERCISE -I (H.W.)
  1. A 3kg mass and 4kg mass are placed on X and Y axes at a distance of 1 ...

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  2. The height at which the value of g is half that on the surface of the ...

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  3. The depth at which the value of g becomes 25% of that at the surface o...

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  4. If the radius of the earth decreases by 10%, the mass remaining unchan...

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  5. The acceleration due to gravity at the poles is 10ms^(-2) and equitori...

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  6. The maximum horizontal range of projectile on the earth is R. Then for...

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  7. A particle hanging from a massless spring stretches it by 2 cm at the ...

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  8. The value of acceleration due to gravity 'g' on the surface of a plane...

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  9. If g is acceleration due to gravity on the surface of the earth, havin...

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  10. There are two bodies of masses 100 kg and 1000 kg separated by a dista...

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  11. Masses 4kg and 36 kg are 16 cm apart. The point where the gravitationa...

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  12. Two particle of masses 4kg and 8kg are kept at x=-2m and x=4m respecti...

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  13. Three particles each of mass m are kept at the vertices of an euilater...

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  14. Three particles each of mass m are palced at the corners of an equilat...

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  15. If W is the weight of a satellite on the surface of the earth, then th...

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  16. A body of mass m is lifted from the surface of earth of height equal t...

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  17. An object of mass 2 Kg is moved from infinity to a poitn P. Initially ...

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  18. If mass of the earth is M, radius is R, and gravitational constant is ...

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  19. A body of mass m is placed on the earth surface is taken to a height o...

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  20. A body is released from a height 5R where R is the radius of the earth...

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