Gravitation-Gravitational Acceleration (NEET Physics): Questions 1 - 4 of 19

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Question number: 1

» Gravitation » Gravitational Acceleration

MCQ▾

Question

Two planets of radii in the ratio 2: 3 are made from the materials of density in the ratio 3: 2. Then the ratio of acceleration due to gravity g1g2 at the surface of two planets will be,

Choices

Choice (4) Response
a.

1

b.

0.12

c.

49

d.

2.25

Question number: 2

» Gravitation » Gravitational Acceleration

MCQ▾

Question

At what height above the surface of the earth is the acceleration due to gravity 6 % of its value at the surface? (Take R to be earth radius)

Choices

Choice (4) Response
a.

4R

b.

R

c.

8R

d.

R4

Question number: 3

» Gravitation » Gravitational Acceleration

MCQ▾

Question

Select the wrong statements from the following

(1) The orbital velocity of a satellite increases with the radius of the orbit

(2) Escape velocity of a particle from the surface of the earth depends on the speed with which it is fired

(3) The time period of a satellite does not depend on the radius of the orbit

(4) The orbital velocity is inversely proportional to the square root of the radius of the orbit

Select the correct answers with mark it according to the following codes:

Choices

Choice (4) Response
a.

1 and 2 are correct

b.

1.2 and 3 are correct

c.

1 and 3 are correct

d.

1 and 4 are correct

Question number: 4

» Gravitation » Gravitational Acceleration

MCQ▾

Question

The potential energy of gravitational interaction of a point mass m and a thin uniform rod of mass M and length l, if they are located along a straight line at a distance a from each other is-

Choices

Choice (4) Response
a.

U=GMm(1a1a+l)

b.

U=GMma

c.

U=GMmlloge(a+la)

d.

U=GMmaloge(a+la)

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