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Questions  

A proton, a deuteron and an α -particle are accelerated by the same potential

difference. Their velocities gained will be in the ratio of

a
1:2:1
b
1:1:2
c
2:1:1
d
1:1:1

detailed solution

Correct option is C

12mv2=Vq⇒  v=2Vqmvp:vd:vα=11:12:24                    =1:12:12                    =2:1:1

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