MCQ Solution: Atoms and Nuclei
An alpha particle is accelerated to a velocity v in a particle accelerator by a potential difference of 1200 V. Which of the following potential differences would be needed to give the alpha particle twice the velocity?
1) 7200 V
2) 4800 V
3) 4100 V
4) 2400 V
W = K = qΔV so ΔV ∝ v2 and for v to double, ΔV must increase by 4.
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