Gravitation (BITSAT Physics): Questions 1 - 5 of 6

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Question number: 1

» Gravitation » Gravitational Potential

MCQ▾

Question

If the gravitational force had varied as r52 instead of r2 . The potential energy of a particle at a distance r from the centre of the earth would be proportional to

Choices

Choice (4) Response

a.

r32

b.

r1

c.

(r1r2)32

d.

r2

Question number: 2

» Gravitation » Gravitational Acceleration

MCQ▾

Question

At what height from the earth surface, the acceleration of gravity will be half the value of g at surface? (R=6400km).

Choices

Choice (4) Response

a.

1600km

b.

4800km

c.

8200km

d.

6400km

Question number: 3

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

The mass of the planet is 19th of the mass of the earth and its radius is half that of the radius of the earth. If a body weighs 450N on the earth, then what will be its weight on planet?

Choices

Choice (4) Response

a.

400N

b.

200N

c.

150N

d.

100N

Question number: 4

» Gravitation » Gravitational Acceleration

MCQ▾

Question

The mass of moon is 7.34×1022kg if the acceleration due to gravity on the moon is 1.4ms2, the radius of the moon is –

(G=6.667×1011Nm2kg2)

Choices

Choice (4) Response

a.

1.86×106m

b.

0.56×104m

c.

1.01×1011m

d.

1.92×106m

Question number: 5

» Gravitation » Gravitational Acceleration

MCQ▾

Question

When you move from equator to pole, the value of acceleration due to gravity (g)

Choices

Choice (4) Response

a.

Increases then decreases.

b.

Decreases

c.

Remains the same

d.

Increases

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