Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 33

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A solid sphere of mass $M$ and radius $a$ is surrounded by a uniform concentric spherical shell of thickness $2 a$ and mass $2 M .$ The gravitational field at distance $3 a$ from the centre will be:

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Important Questions on Gravitation

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Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 34

Suppose that the angular velocity of rotation of the Earth is increased. Then, as a consequence,

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Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 35

A planet moving around the sun sweeps area

A_{1}

in

2

days,

A_{2}

in

4

days and

A_{3}

in

9

days. Then, relation between them
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Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 36

What will be its time period (in earth's days) if a new planet is discovered rotating around the sun with an orbital radius double that of the earth?

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Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 37

Two satellites

S_{1}

and

S_{2}

revolve around a planet in coplanar circular orbits in the same sense. Their periods of revolution are

2 hours

and

16 hours

respectively. If the radius of the orbit of

S_{1}

is

10^{4} km,

then the radius of the orbit of

S_{2}

is

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Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 38

If

A

is the areal velocity of a planet of mass

M

, then its angular momentum about the centre of the circular orbit is

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Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 39

A planet of mass

m

is moving in an elliptical orbit about the sun of mass

M

. The maximum and minimum distances of the planet from the sun are

r_{1}

and

r_{2}

, respectively. The period of revolution of the planet will be proportional to

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Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 40

The relay satellite transmits the

T . V .

programme continuously from one part of the world to another because its

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Physics Crash Course NEET>Chapter 6 - Gravitation>Level 1>Q 41

A geostationary satellite