True.
Explanation:
Centripetal force on the satellite \(\frac{mv^2_c}{R+h}\) = gravitational force exerted by the earth on the satellite \(\frac{GMm}{(R+h)^2}\) where,
m: mass of the satellite
vc : critical velocity of the satellite
h: height of the satellite from the surface of the earth
M: mass of the earth
R: radius of the earth
G: gravitational constant
∴ \(v^2_c=\frac{GM}{R+h}\)
∴ vc = \(\sqrt{\frac{GM}{R+h}}\)
Thus, if the value of h changes, the value of υc also changes. It means a satellite needs to be given a specific velocity (in the tangential direction) to keep it revolving in a specific orbit.