Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 66

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A satellite revolves around the earth in an elliptical orbit. Its speed

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Important Questions on Gravitation

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 67

Time period of revolution of a satellite around a planet of radius

R

is

T

. Period of revolution around another planet, whose radius is

3 R

but having same density is

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 68

If

v_{e}

and

v_{0}

represent the escape velocity and orbital velocity of a satellite corresponding to a circular orbit of radius

R,

then

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 69

A spherical planet far out in space has a mass

M_{0}

and diameter

D_{0}

. A particle will experience an acceleration due to gravity which is equal to

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 78

If two identical satellites are at

R

and

7 R

away from earth surface, the wrong statement is (

R =

radius of Earth),

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 79

For a satellite escape velocity is

11 km s^{- 1}

. If the satellite is launched at an angle of

60 °

with the vertical, then escape velocity will be

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 99

Escape velocity for a rocket is

11.2 km / s .

If it is taken to a planet where the radius and acceleration due to gravity is double than earth, then escape velocity will be :

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 101

In case of an orbiting satellite if the radius of orbit is decreased :

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-1>Q 104

The escape velocity for a body projected vertically upwards from the surface of earth is

11 km / s

. If the body is projected at an angle

45 °

with the vertical, the escape velocity will be