Why moon has no atmosphere?

Important Questions on Gravitation

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 1

According to Kepler, planets move in

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 2

The minimum and maximum distances of a planet revolving around sun are $r$ and $R.$ If the minimum speed of planet on its trajectory is $v_0,$ its maximum speed will be

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 3

A planet of mass $m$ moves around the sun of mass $M$ in an elliptical orbit. The maximum and minimum distance of the planet from the sun are $r_1$ and $r_2$, respectively. The time period of the planet is proportional to

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 4

The torque on a planet about the centre of sun is

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 5

During motion of a planet from perihelion to aphelion the work done by gravitational force of sun on it is

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 6

If the period of a satellite in a circular orbit of radius $R$ is $T$, then the period of another satellite in a circular orbit of the radius $4R$ is

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 7

Gravitation is the phenomenon of interaction between

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 8

Force of gravitation between two masses is found to be $F$ in vacuum. If both the masses are dipped in water at same distance then, new force will be