Universal Law of Gravitation and G
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PHXI08:GRAVITATION

360057 Assertion :
The gravitational force on a particle inside a spherical shell is zero.
Reason :
Outside bodies can exert force on the particles which are present inside the shell.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
PHXI08:GRAVITATION

360058 The mass density of a spherical galaxy varies as \(\dfrac{K}{r}\) over a large distance \('r'\) from its centre. In that region, a small star is in a circular orbit of radius \(R\). Then the period of revolution, \(T\) depends on \(R\) as

1 \(T^{2} \propto R\)
2 \(T^{2} \propto R^{3}\)
3 \(T^{2} \propto \dfrac{1}{R^{3}}\)
4 \(T \propto R\)
PHXI08:GRAVITATION

360059 Three equal masses of \(1 \mathrm{~kg}\) each are placed at the vertices of an equilateral \(\triangle P Q R\) and a mass of \(2 \mathrm{~kg}\) is placed at the centroid \(O\) of the triangle which is at a distance of \(\sqrt{2} \mathrm{~m}\) from each of the vertices of the triangle. The force, (in newton) acting on the mass of \(2 \mathrm{~kg}\) is

1 2
2 \(\sqrt{2}\)
3 1
4 zero
PHXI08:GRAVITATION

360060 Which of the following is false statement?

1 Gravitational force acts along the line joining the two interacting particles
2 Gravitational force is independent of medium
3 Gravitational force forms an action-reaction pair
4 Gravitational force does not obey the principle of superposition.
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PHXI08:GRAVITATION

360057 Assertion :
The gravitational force on a particle inside a spherical shell is zero.
Reason :
Outside bodies can exert force on the particles which are present inside the shell.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
PHXI08:GRAVITATION

360058 The mass density of a spherical galaxy varies as \(\dfrac{K}{r}\) over a large distance \('r'\) from its centre. In that region, a small star is in a circular orbit of radius \(R\). Then the period of revolution, \(T\) depends on \(R\) as

1 \(T^{2} \propto R\)
2 \(T^{2} \propto R^{3}\)
3 \(T^{2} \propto \dfrac{1}{R^{3}}\)
4 \(T \propto R\)
PHXI08:GRAVITATION

360059 Three equal masses of \(1 \mathrm{~kg}\) each are placed at the vertices of an equilateral \(\triangle P Q R\) and a mass of \(2 \mathrm{~kg}\) is placed at the centroid \(O\) of the triangle which is at a distance of \(\sqrt{2} \mathrm{~m}\) from each of the vertices of the triangle. The force, (in newton) acting on the mass of \(2 \mathrm{~kg}\) is

1 2
2 \(\sqrt{2}\)
3 1
4 zero
PHXI08:GRAVITATION

360060 Which of the following is false statement?

1 Gravitational force acts along the line joining the two interacting particles
2 Gravitational force is independent of medium
3 Gravitational force forms an action-reaction pair
4 Gravitational force does not obey the principle of superposition.
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PHXI08:GRAVITATION

360057 Assertion :
The gravitational force on a particle inside a spherical shell is zero.
Reason :
Outside bodies can exert force on the particles which are present inside the shell.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
PHXI08:GRAVITATION

360058 The mass density of a spherical galaxy varies as \(\dfrac{K}{r}\) over a large distance \('r'\) from its centre. In that region, a small star is in a circular orbit of radius \(R\). Then the period of revolution, \(T\) depends on \(R\) as

1 \(T^{2} \propto R\)
2 \(T^{2} \propto R^{3}\)
3 \(T^{2} \propto \dfrac{1}{R^{3}}\)
4 \(T \propto R\)
PHXI08:GRAVITATION

360059 Three equal masses of \(1 \mathrm{~kg}\) each are placed at the vertices of an equilateral \(\triangle P Q R\) and a mass of \(2 \mathrm{~kg}\) is placed at the centroid \(O\) of the triangle which is at a distance of \(\sqrt{2} \mathrm{~m}\) from each of the vertices of the triangle. The force, (in newton) acting on the mass of \(2 \mathrm{~kg}\) is

1 2
2 \(\sqrt{2}\)
3 1
4 zero
PHXI08:GRAVITATION

360060 Which of the following is false statement?

1 Gravitational force acts along the line joining the two interacting particles
2 Gravitational force is independent of medium
3 Gravitational force forms an action-reaction pair
4 Gravitational force does not obey the principle of superposition.
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PHXI08:GRAVITATION

360057 Assertion :
The gravitational force on a particle inside a spherical shell is zero.
Reason :
Outside bodies can exert force on the particles which are present inside the shell.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
PHXI08:GRAVITATION

360058 The mass density of a spherical galaxy varies as \(\dfrac{K}{r}\) over a large distance \('r'\) from its centre. In that region, a small star is in a circular orbit of radius \(R\). Then the period of revolution, \(T\) depends on \(R\) as

1 \(T^{2} \propto R\)
2 \(T^{2} \propto R^{3}\)
3 \(T^{2} \propto \dfrac{1}{R^{3}}\)
4 \(T \propto R\)
PHXI08:GRAVITATION

360059 Three equal masses of \(1 \mathrm{~kg}\) each are placed at the vertices of an equilateral \(\triangle P Q R\) and a mass of \(2 \mathrm{~kg}\) is placed at the centroid \(O\) of the triangle which is at a distance of \(\sqrt{2} \mathrm{~m}\) from each of the vertices of the triangle. The force, (in newton) acting on the mass of \(2 \mathrm{~kg}\) is

1 2
2 \(\sqrt{2}\)
3 1
4 zero
PHXI08:GRAVITATION

360060 Which of the following is false statement?

1 Gravitational force acts along the line joining the two interacting particles
2 Gravitational force is independent of medium
3 Gravitational force forms an action-reaction pair
4 Gravitational force does not obey the principle of superposition.