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 Sep 18, 2022
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What will be the energy of electron travelling at $10^{7}\,\,\rm{ms^{-1}}$
Difficulty: Easy
A: 
$283\,\,\rm{J}$
B: 
$2.83\,\,\rm{J}$
C: 
$28.3\,\,\rm{J}$
D: 
None of these
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