Question

The radial acceleration of revolving satellite in
elliptical orbit is always
a) equal to acceleration due to gravity at that
height
b) greater than acceleration due to gravity
at that height
c) less than the acceleration due to gravity
at that height
d) zero
​

Answer 1

Uniform circular motion, but the satellite is accelerated towards the centre of the earth.

Explanation:

There are a few concepts with regards to a satellite orbiting the earth.

The orbit is actually elliptical, but it is treated as circular for easier calculations.

The satellite is orbiting with constant speed.

The satellite's velocity is always changing.

The satellite is accelerating, because there is a net force acting on it.

The force of gravity on the satellite is the centripetal force.