A) \[1.6\times {{10}^{-21}}J\]
B) \[1.6\times {{10}^{-23}}J\]
C) \[1.6\times {{10}^{-10}}J\]
D) \[1.6\times {{10}^{-16}}J\]
Correct Answer: D
Solution :
Potential difference V= 1000 V The kinetic energy of a electron \[1\,eV=1.6\times {{10}^{-19}}J\] Hence, the kinetic energy of the electron is \[=1000\,eV\] \[=1.6\times {{10}^{-19}}\times 1000\] \[=1.6\times {{10}^{-16}}J\]
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