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1.
An artificial satellite orbiting the earth does not fall down because the earth's attraction
2.
Consider the following statements:
A body weighs less at the equator than at the poles because:
1. earth rotates about its axis.
2. the ice cap at the poles increases gravitational pull.
3. equatorial diameter is greater than the polar diameter.
4. of some unknown facts.
Which of the statements given above is/are incorrect?
A body weighs less at the equator than at the poles because:
1. earth rotates about its axis.
2. the ice cap at the poles increases gravitational pull.
3. equatorial diameter is greater than the polar diameter.
4. of some unknown facts.
Which of the statements given above is/are incorrect?
3.
Assertion [A]: Gravitational attraction is a central force and therefore in motion of planets in the solar system, the angular momentum is conserved.
Reason [R]: In the motion of planets of the solar system, equal areas are swept in equal time.
Reason [R]: In the motion of planets of the solar system, equal areas are swept in equal time.
4.
Which one of the following statements regarding artificial satellite of the earth is incorrect?
5.
Assertion [A]: Space rocket are usually launched in the equatorial line from west to east
Reason [R]: The acceleration due to gravity is minimum at the equator.
Reason [R]: The acceleration due to gravity is minimum at the equator.
6.
A body is at rest on the surface of earth. Which of the following statements is correct?[SSC CGL]
7.
Consider a satellite going round the earth in a circular orbit. Which of the following statements is wrong?
8.
Assertion: The value of 'g' is greater at the equator than at the poles.
Reason: Radius is more at the equator than at the poles.
Reason: Radius is more at the equator than at the poles.
9.
The substance which exhibits practically no elastic effect is
10.
Kerosene oil rises up in a wick of lantern because of