1.

A satellite is moving round the earth. In order to make it move to infinity, it velocity must be increased by:

Answer»

`82.8%`
`41.4%`
`20.7%`
It is not possible to do so.

Solution :`v_(0)=SQRT(gR), v_(e )=sqrt(2gR)`
`therefore` % increase in velocity `=(v_(e )-v_(0))/(v_(0)) XX 100`
`=(sqrt(2gR)-sqrt(gR))/(sqrt(gR)) xx 100=41.4%`
So the CORRECT choice is (b).


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