Physics GK 06 – Gravitation

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Which of the following is true about universal gravitational constant in the case of two bodies each of unit mass having their centres placed at unit distance apart?

It is equal to the force of attraction between them

It is equal to twice the force of attraction between them

It is equal to half the force of attraction between them

It is equal to ten times the force of attraction between them

Which of the following laws state that the orbits of the planets are ellipses, with the Sun at one focus of the ellipse?

Kepler's First law

Kepler's Second law

Kepler's Third law

None of the above

Kepler's second law is also known as:

Law of periods

Law of areas

Law of orbits

Law of Planets

According to Kepler's third law, the square of the period of revolution of a planet is directly proportional to what?

The semi-major axis of its elliptical orbit

The cube root of the semi-major axis of its elliptical orbit

The square of the semi-major axis of its elliptical orbit

The cube of the semi-major axis of its elliptical orbit

Which of the following represents the dimensional formula of Universal Gravitational Constant?

M1 L2 T-2

M-1 L1 T-2

M-1 L3 T-2

M1 L3 T-2

Physics GK 06 - Gravitation