1.

Two satellites revolve around the earth at distances 3R and 6R from the centre of earth. Their periods of revolutions will be in the ratio:

Answer»

`1:2^(0.67)`
`2:1`
`1:2^(1.5)`
`1:2`

SOLUTION :As `(T_(2))/(T_(1))=((r_(2))/(r_(1)))^(3//2)=((6R)/(3R))^(3//2)=2^(3//2)`
`(T_(2))/(T_(1))=2^(1.5) rArr T_(1):T_(2)=1:2^(1.5)`
So the correct CHOICE is (C ).


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