Figure shows the variation of energy with the orbit radius r of a satellite in a circular motion. Mark the correct statement.

Options

A. A shows the kinetic energy, B shows the total energy and C the B potential energy of the satellite.
B. A and B are the kinetic energy and potential energy respectively and the total energy of the satellite.
C. A and B are the potential energy and kinetic energy respectively and C the total energy of the satellite.
D. C and A are the kinetic and potential energies respectively and B the total energy of the satellite.

Answer

B

Explanation

`KE = (GMm)/(2r) , PE = - (GMm)/( r) " and " TE = - (GMm)/( 2r)`
KE is always positive and KE `prop 1/r`
PE is always negative and PE `prop 1/r`
TE is also negative and TE `prop 1/r`
Also TE < PE
Thus the curve A represents KE curve B represents PE and curve C represents TE of the satellite.