Gravitation (NEET Physics): Questions 19 - 22 of 82
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Question number: 19
» Gravitation » Gravitational Potential
Gravitational potential of earth at every place on it is negative.
Everybody on earth is bound by the attraction of earth.
|a.||Ꭺ is false but Ꭱ is true|
|b.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|
|c.||Both Ꭺ and Ꭱ are false|
|d.||Ꭺ is true but Ꭱ is false|
Question number: 20
» Gravitation » Gravitational Acceleration
Two planets of radii in the ratio 1: 2 are made from the materials of density in the ratio 3: 1. Then the ratio of acceleration due to gravity g 1 /g 2 at the surface of two planets will be
Question number: 21
» Gravitation » Energy
If an earth satellite moves to a lower orbit, there is some dissipation of energy but the speed of gravitational satellite increases.
The speed of satellite is a constant quantity.
|a.||Ꭺ is true but Ꭱ is false|
|b.||Ꭺ is false but Ꭱ is true|
|c.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|
|d.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|
Question number: 22
» Gravitation » Kepler's Laws of Planetary Motion
The Jupiter’s period of revolution round the Sun is 12 times that of the Earth. Assuming the planetary orbits are circular, how many times the distance between the Jupiter and Sun exceeds that between the Earth and the sun.