Gravitation (AIIMS Physics): Questions 1 - 4 of 6

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Question number: 1

» Gravitation » Gravitational Acceleration

Appeared in Year: 2009

Assertion-Reason▾

Assertion (Ꭺ)

The difference in the value of acceleration due to gravity at pole and equator is proportional to square of angular velocity of earth.

Reason (Ꭱ)

The value of acceleration due to gravity is minimum at the equator and maximum at the pole.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 2

» Gravitation » Kepler's Laws of Planetary Motion

MCQ▾

Question

The distance of two planets from the sun are in the ratio 3: 1. Assuming that they are moving in circular orbits, what will be the ratio of their time periods?

Choices

Choice (4) Response

a.

1:3

b.

33:1

c.

1:33

d.

3:1

Question number: 3

» Gravitation » Kepler's Laws of Planetary Motion

MCQ▾

Question

A geo – stationary satellite orbiting the earth at a height 3R from the earth surface with time period of 2T. Another satellite is orbiting the earth at a height 0.6 R from the earth surface. Find the time period of this satellite.

Choices

Choice (4) Response

a.

T3

b.

T2

c.

0.30T

d.

0.18T

Question number: 4

» Gravitation » Escape Velocity

MCQ▾

Question

v1 and v2 are escape velocities on two planets whose radii are in the ratio 3: 1 and densities are in the ratio 1: 9. What is the relationship between v1 and v2 ?

Choices

Choice (4) Response

a.

v1=3v2

b.

v1=v2

c.

v2=3v1

d.

v1=3v2

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