Physics GK 06 - Gravitation

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

As per the Kepler's third law, the square of the time period of revolution of a planet is directly proportional to which of the following?

semi-major axis of its elliptical orbit

cube root of semi-major axis of its elliptical orbit

square of semi-major axis of its elliptical orbit

cube of 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