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Statement-1: Moon cannot be used as a sa...

Statement-1: Moon cannot be used as a satellite for communication.
Statement-2: Moon doesn't move in the equatorial plane of the earth.

A

Statement-1 is True, Statement-2 is True ,
Statement-2 is a correct explanation for
Statement-1

B

Statement-1 is True, Statement-2 is True ,
Statement -2 is not a correct explanation for
Statement-1

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

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The correct Answer is:
A
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Statement-1: On moon you cannot hear your friend standing at some distance from you Statement-2: There is vacuum on moon.

(a).Find the radius of the circular orbit of a satellite moving with an angular speed equal to the angular speed of earth's rotation. (b). If the satellite is directly above the north pole at some instant, find the time it takes to come over the equatorial plane. Mass of the earth =6xx10^24kg

Statement-1: Moon has no atmosphere. Statement-2: Due to less gravity moon is unable to retain its atmosphere.

Statement-1: The plane of the orbit of an artificial satellite must contain the centre of the Earth. Statement-2: For an artificial satellite, the necessary centripetal force is provided by gravity.

The ratio of earth's surface area as covered by two communication satellite moving synchronously in equatorial plane with orbital speed of 1/sqrt2 times and sqrt3/5 times that of required orbital speed near earths surface is

Statement I: If time period of a satellite revolving in circular orbit in equatorial plane is 24 h , then it must be a, geostationary satellite. Statement II: Time period of a geostationary satellite is 24 h .

Statement I: Consider a satellite moving in an elliptical orbit around the earth. As the satellite moves, the work done by the gravitational force of the earth on the satellite for any small part of the orbit is zero. Statement II: K_(E) of the satellite in the above described case is not constant as it moves around the earth.

Two satellites A and B of equal mass move in the equatorial plane of the earth, close to earth's surface. Satellite A moves in the same direction as the of the rotation of the earth while satellite B moves in the opposite direction. Calclate the ratio of the kinetic energy of B of that of A in the reference frame fixed to the earth (g=9.8ms^(-2) and radius of the earth =6.37xx10^(6)km)

Two satellites A and B of equal mass move in the equatorial plane of the earth, close to earth's surface. Satellite A moves in the same direction as the of the rotation of the earth while satellite B moves in the opposite direction. Calclate the ratio of the kinetic energy of B of that of A in the reference frame fixed to the earth (g=9.8ms^(-2) and radius of the earth =6.37xx10^(6)m)

The equatorial diameter of the earth is approximately 8,000 miles. A communications satellite makes a circular orbitals around the earth. If the satellite completes one orbit every 5 hours, how many miles does the satellite travel in 1 hour?

ALLEN-RACE-Basic Maths (GRAVITATION)
  1. For a satellite to be geo-stationary, which of the following are essen...

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  2. Statement-1:A personfeels weightlessness in an artificial satellite of...

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  3. Statement-1: Moon cannot be used as a satellite for communication. S...

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  4. if suddenly the gravitational force of attraction between earth and a ...

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  5. The kinetic energy needed to project a body of mass m from the earth s...

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  6. If the change in the value of g at a height h above the surface of ear...

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  7. The height at which the acceleration due to gravity becomes (g)/(9) (w...

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  8. Two bodies of masses m and 4m are placed at a distance r. The gravitat...

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  9. Gravitational force between a point mass m and M separated by a distan...

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  10. How much below the surface of the earth does the acceleration due to g...

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  11. The eccentricity of the earth's orbit is 0.0167, the ratio of its maxi...

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  12. A ball of mass m is fired vertically upwards from the surface of the e...

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  13. A thin of length L is bent to form a semicircle. The mass of rod is M....

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  14. Ratio of amplitude for two wave is 3:9 .Find the ratio of maximum ampl...

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  15. When a body is taken from the equator to the poles, its weight

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  16. The change in potential energy when a body of mass m is raised to a he...

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  17. The variation in the speed of the planet in their orbits about the sun...

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  18. The radii of circular orbits of two satellites A and B of the earth ar...

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  19. A satellite is moving around the earth with speed v in a circular orb...

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  20. A small body of mass m falls to the earth from infintie distance away....

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