Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 111

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The distance of Neptune and Saturn from sun are nearly $10^{13}$ and $10^{12}$ metres, respectively. Assuming that they move in circular orbits, their periodic times will be in the ratio

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Important Questions on Gravitation

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 112

Two planets move around the Sun. The periodic times and the mean radii of the orbits are

T_{1}, T_{2}

and

r_{1}, r_{2}

, respectively. The ratio

\frac{T_{1}}{T_{2}}

is equal to

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 113

The rotation period of an earth satellite close to the surface of the earth is

83

minutes. The time period of another earth satellite in an orbit at a distance of three earth radii from its surface will be

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 114

A satellite of mass

m

is circulating around the earth with constant angular velocity. If the radius of the orbit is

R_{0}

and mass of the earth

M

, the angular momentum about the centre of the earth is

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 115

A planet revolves around the sun whose mean distance is

1.588

times the mean distance between the earth and the sun. The revolution time of planet will be

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 119

The ratio of the distance of two planets from the sun is

1.38

. The ratio of their period of revolution around the sun is -

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 120

Kepler's second law (law of areas) is nothing but a statement of

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 121

In an elliptical orbit under gravitational force, in general

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 122

What does not change in the field of central force?