A particle has a mass 400 times that of the electron and the charge is double th

Question

A particle has a mass 400 times that of the electron and the charge is double that of an electron. It is accelerated by 5V of potential difference. Initially the particle was at rest, then its final kinetic energy will be

Options:

A . 5 eV

B . 10 eV

C . 100 eV

D . 2000 eV

Answer: Option B
:
B

Δ E = 2 e \times 5 V = 10 e V \Rightarrow

Final kinetic energy

= 10 e V

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