A satellite is revolving in a circular orbit at a height h from the earth surface ,such that `hlt lt R` is the readius of the earth .Assuming that the effect of earth 's atmosphere can be neglected the minimum increase in the speed required so that the stallite could escape from the gravitational field of earth is :
A
`sqrt(2gR)`
B
`sqrt(gR)`
C
`sqrt((gR)/2)`
D
`sqrt(gR)(sqrt2-1)`
Text Solution
Verified by Experts
The correct Answer is:
D
`V_e=sqrt((2GM)/R),V_0=sqrt((GM)/R)` So, `triangleV=(sqrt2-1) sqrt((GM)/R)=(sqrt2-1)sqrt(gR)`
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VMC MODULES ENGLISH-JEE Main Revision Test-6 | JEE-2020 -PHYSICS
