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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Work, Power and Energy
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A cyclotron is used to accelerate protons deuterons, $\alpha$- particles etc. If energy attained after acceleration by proton is E, the energy attained by $\alpha$- particle shall be

\[(a)\;4\;E\quad (b)\;2\;E \quad (c)\; E \quad (d)\;\frac{E}{4}\]

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The energy attained by a proton is $E=qv$ where $'q'$ is the charge on proton and v is the potential.
The energy attained by $\alpha$- particle
$E'=(2q)v$ (as $\alpha$ particle has 2q charge )
$\therefore E'=2E$
Hence b is the correct answer.


answered Aug 6, 2013 by meena.p
edited Feb 17, 2014 by meena.p

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