1.

Two satellites of masses m_(1) and m_(2)(m_(1) gt m_(2)) are revolving around the earth in circular orbits of radius r_(1) and r_(2)(r_(1) gt r_(2)) respectively, which of the following is true regarding their speeds V_(1) and V_(2) ?

Answer»

`V_(1)=V_(2)`
`V_(1) lt V_(2)`
`V_(1) gt V_(2)`
`(V_(1))/(r_(1))=(V_(2))/(r_(2))`

Solution :Orbital velocity `V_(0)= sqrt((GM)/(r )) rArr V_(0) prop (1)/(sqrt(r ))`
So the CORRECT CHOICE is (B).


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