1.

In case of an orbiting satellite if the radius of orbit is decreased

Answer»

its KINETIC energy decreases
its potentia energy increases
Both (a) and (b) are correct
Both (a) and (b) are wrong

Solution :As kinetic energy, `K=(GMM)/(2r)`
Potentialm energy, `U=-(GMm)/(R)`
Total energy, `E=-(GMm)/(2r)`
If `r` is decreased, K will increase but U and E will DECREASE.


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