1.

The time period of revolution of a satellite is T. The kinetic energy of the satellite is proportional to:

Answer»

`T^(-2//3)`
`T^(3)`
`T^(2)`
`T`

Solution :`K.E. =(GMm)/(2r) RARR E_(k) prop (1)/(r )`
ALSO `T^(2)prop r^(3) rArr r prop T^(2//3)`.
`THEREFORE E_(k) prop T^(-2//3)`
So the CORRECT choice is (a).


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