AIPMT 2006 | Gravitation Question 53 | Physics

The earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the earth. The escape velocity of a body from this platform is fv, where v is its escape velocity from the surface of the Earth. The value of f is

1/2

$$\sqrt 2 $$

1/$$\sqrt 2 $$

1/3

AIPMT 2005

MCQ (Single Correct Answer)

-1

Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g', then

g' = g/9

g' = 27g

g' = 9g

g' = 3g

AIPMT 2005

MCQ (Single Correct Answer)

-1

For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is

1/2

1/$$\sqrt 2 $$

$$\sqrt 2 $$

AIPMT 2004

MCQ (Single Correct Answer)

-1

The density of a newly discovered planet is twice that of earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. If the radius of the earth is R, the radius of the planet would be

$${1 \over 4}$$R

$${1 \over 2}$$R

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