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Question (11)

QN0035491

A particle of mass ' ' is projected with a velocity from the surface of the earth. ( escape velocity). The maximum height above the surface reached by the particle is

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

From law of conservation of mechanical energy,

We know, escape velocity

or,

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Question (12)

QN0035492

A body of mass experiences a gravitational force of 3.0 , when placed at a particular point. The magnitude of the gravitational field intensity at that point is:

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

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Question (13)

QN0035493

Two bodies of mass and are placed at a distance . The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be ( = gravitational constant)

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

Let gravitational field at point be zero

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Question (14)

QN0035494

A satellite is orbiting just above the surface of the earth with period . If is the density of the earth and is the universal constant of gravitation, the quantity represents

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

Time period of satellite just above earth surface (T) is given by

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Question (11)

A particle of mass ' ' is projected with a velocity from the surface of the earth. ( escape velocity). The maximum height above the surface reached by the particle is

Explanation:

Link:

Question (12)

A body of mass experiences a gravitational force of 3.0 , when placed at a particular point. The magnitude of the gravitational field intensity at that point is:

Explanation:

Link:

Question (13)

Two bodies of mass and are placed at a distance . The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be ( = gravitational constant)

Explanation:

Link:

Question (14)

A satellite is orbiting just above the surface of the earth with period . If is the density of the earth and is the universal constant of gravitation, the quantity represents

Explanation:

Link:

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