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Photoelectric Effect

A proton is a...

Question

A proton is about $1840$ times heavier than an electron. When it is accelerated by a potential difference of $1 k e V$ , it's kinetic energy will be:

A

1840 k e V

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B

1 / 1840 k e V

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C

1 k e V

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D

920 V

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Solution

The correct option is C $1 k e V$
When a charge $q$ is accelerated by $V$ its, K.E. will be given by $K . E . = q V$ , irrespective of its mass. Therefore, its K.E. will be $1 K e V$ .

Hence, the correct option is $C$

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