Gravitation (NEET Physics): Questions 6 - 9 of 82

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Question number: 6

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

If a graph is plotted between T 2 and r 3 for a planet then its slope will be –

Choices

Choice (4) Response
a.

GM4π2

b.

4πGM

c.

4π2GM

d.

0

Question number: 7

» 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: 8

» 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: 9

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

If the satellite is stopped suddenly in its orbit which is at a distance = radius of earth from earth’s surface and allowed to fall freely into the earth, the speed with which it hits the surface of earth will be -

Choices

Choice (4) Response
a.

7.919msec

b.

11.2kmsec

c.

7.919kmsec

d.

11.2msec

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