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A particle is thrown with escape velocity `v_(e)` from the surface of earth. Calculate its velocity at height 3 R :-

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A particle is thrown with escape velocity `v_(e)` from the surface of earth. Calculate its velocity at height 3 R :-
A. `cong 9.25` km/s
B. `cong 5.6` km/s
C. `cong 11.2` km/s
D. `cong 4.3` km/s
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Correct Answer - B
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