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Photoelectric Effect

Mass of a par...

Question

Mass of a particle is $400$ times than that of an electron and charge is double that of an electron. The particle is accelerated by a potential difference of 5V. If particle is initially at rest, then its final KE will be

A

5 e V

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B

10 e V

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C

100 e V

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D

2000 e V

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Solution

The correct option is A $10 e V$
As we know,
$E = e V = 2 e \times 5 = 10 e V$

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