Which of the following are not correct?

Options

A. The escape velocity for the Moon is `6 km s^(-1)`.
B. The escape velocity from the surface of Moon is `v`.
The orbital velocity for a satellite to orbit very close to the surface of Moon is `v//2`
C. When an earth satellite is moved from one stable orbit to a further stable orbit, the gravitational potential energy increases.
D. The orbital velocity of a satellite revolving in as circular path close to the planet is independent of the density of the planet

Answer

A, D

Explanation

a. For Moon escape velocity is `2.4kms^(-1)`.
d. `v_(0)=sqrt((2GM)/R)=sqr((2G)/Mxx4/3piR^(3)rho)`
or `v_(0)propsqrt(rho)`