A proton and a deuteron both having the same kinetic energy enter perpendicularly in to uniform magnetic field B for motion of proton and deuteron on ciruclar path of radius `R_(p)` and `R_(d)` respectively the correct statement isA. `R_(d)=sqrt(R_(p))`B. `R_(d)=R_(p)//sqrt(2)`C. `R_(d)=R_(p)`D. `R_(d)=2R_(p)`

A proton and a deuteron both having the same kinetic energy enter perp

1.	A proton and a deuteron both having the same kinetic energy enter perpendicularly in to uniform magnetic field B for motion of proton and deuteron on ciruclar path of radius `R_(p)` and `R_(d)` respectively the correct statement isA. `R_(d)=sqrt(R_(p))`B. `R_(d)=R_(p)//sqrt(2)`C. `R_(d)=R_(p)`D. `R_(d)=2R_(p)`
Answer» Correct Answer - A `(mv^(2))=qvB` for proton `R_(p)=(mv)/(qB)=sqrt(2m_(p)E)/(qB)` for deuteron `R_(d)=sqrt(2m_(d)E)/(qB)` `rarr (R_(d))/(R_(p))=sqrt(m_(d))/(m_(p))=sqrt(2)` `rarr R_(d)=sqrt(2R_(p)`

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