1:   The acceleration due to gravity near the surface of a planet of radius R and density d is proportional to --------
Options:
1. d/R
2. R/d
3. dR
4. none of the above

Explanation:

Sorry, No description available.

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2:   The diameters of two planets are in the ratio 4:1and their mean densities are in the ratio 1:2.The acceleration due to gravity on the planets will be in the ratio of ----------
Options:
1. 1:2
2. 2:1
3. 2:3
4. 3:1

Explanation:

Sorry, No description available.

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3:   The ratio of energy required to raise a satellite to a height h above the earth surface to that required to put it into the orbit is -------
Options:
1. h:2R
2. 2h:R
3. R:h
4. h:R

Explanation:

Sorry, No description available.

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4:   What is not conserved in case of celestial bodies revolving around the sun all the time?
Options:
1. Mass
2. Angular momentum
3. Kinetic energy
4. all of the above

Explanation:

Sorry, No description available.

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5:   The centripetal force on a satellite orbiting around the earth and the gravitational force of earth acting on the satellite both equal F.The net force on the satellite is ------
Options:
1. zero
2. F
3. 1,414 F
4. none of the above

Explanation:

Sorry, No description available.

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6:   The centripetal force on a satellite orbiting around the earth and the gravitational force of earth acting on the satellite both equal F.The net force on the satellite is ------
Options:
1. zero
2. F
3. 1,414 F
4. none of the above

Explanation:

Sorry, No description available.

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7:   When a planet moves around the sun,its
Options:
1. linear velocity is constant
2. areal velocity is constant
3. angular velocity is constant
4. all of the above

Explanation:

Sorry, No description available.

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8:   Which among the following quantities remain constant for a satellite in elliptical orbit?
Options:
1. Angular momentum
2. Momentum
3. Total energy
4. all of the above

Explanation:

Sorry, No description available.

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9:   If a body is projected from earth's surface to become its satellite,its time period of revolution will not depend upon -----
Options:
1. mass of earth
2. gravitational constant
3. its own mass

Explanation:

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10:   The velocity with which a projectile must be fired to escape from the earth does not depend on ------
Options:
1. mass of earth
3. both of the above
4. mass of the projectile

Explanation:

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I waited patiently for the Lord and He inclined unto me and He heard my cry. He lifted me out of the horrible pit, out of the miry clay,and He has set my feet upon a ROCK and He established my steps, and He has given me a a new song even praise unto our God many shall see it and fear and shall trust in the Lord...the first lines of an ancient Hebrew song Psalm 40: -
-King David