A) 5000 eV
B) $ 8\times {{10}^{-15}} $ J
C) 5000 J
D) 50,000 J
Correct Answer: B
Kinetic energy $ K=Q.V\Rightarrow K=( +e )( 50000V ) $
$ =50000eV=50000\times 1.6\times 10^{-19}J=8\times 10^{-14}J $
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