A rocket is fired from the earth towards...

A rocket is fired from the earth towards the sun. At what distance from the earth's centre is the gravitational force on the rocket zero? Mass of the sun`=2xx10^(30)kg`, mass of the earth`=6xx10^(24)kg`. Neglect the effect of other planets etc. (orbital radius=`1.5xx10^(11)m`).

`2.6xx10^(8)m`

`3.2xx10^(8)m`

`3.9xx10^(9)m`

`2.3xx10^(9)`m

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