Assertion: When a satellite is moving in a circular orbit around the Earth, total energy of a satellite, is half of its potential energy.
Reason: The gravitational force obeys the inverse square law of distance.
Select the correct statement of the following.

Options

A. Assertion and reason are true and reason explains assertions correctly.
B. Assertion and reason are true but reason does not explain assertion correctly.
C. Assertion is true but reason is false.
D. Assertion is false but reason is true.

Answer

A

Explanation

Assertion:
Total energy `T.E=-(GMm)/(2r)`
Potential energy `P.E=(GMm)/(r)`
`thereforeT.E=(1)/(2)P.E`
Reason: Gravitational force F is inversely proportional to the square of distance.