1.

A planet goes round the sun three times as fast as the earth. If r_(p) and r_(e) are the radii of orbit of the planet and the earth respectively then

Answer»

<P>`r_(E)^(3) = 8 r_(p)^(3)`
`r_(e)^(3) = 3 r_(p)^(3)`
`r_(e)^(3) = 9 r_(p)^(3)`
`r_(e)^(3) = (1)/(3) r_(p)^(3)`

Solution :`(T_(p))/(T_(e)) = (1)/(3)`
`((T_(p))/(T_(e)))^(2) = ((r_(p))/(r_(e)))^(3) rArr r_(e)^(3) = 9r_(p)^(3)`


Discussion

No Comment Found

Related InterviewSolutions