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` H^(+), He^(+) and O^(++)` all having the same kinetic energy pass through a region in which there is a uniform magnetic field perpendicular to their velocity . The masses of ` H^(+), He^(+) and O^(2+)` are `1 amu, 4 amu and 16 amu` respectively . ThenA. `H^(+)` will be deflected the mostB. `O^(2+)` will be deflected the mostC. `He^(+_` and O^(2+)` will be deflected equally.D. All will be deflected equally |
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Answer» Correct Answer - A::C `K=1/2 mv^(2) implies v=sqrt(2K//m), r=(mv)/(qB)=(sqrt(2mK))/(qB)` `r_(H^+)=sqrt(2mK((eB), r_(He^+))=(sqrt(2(4m)K))/(eB))=2r_(H^+)` `r_(O^(2+)) = (sqrt(2(16m)K))/(2eB)=2r_(H^+)` Lasser the radius, more will be the deflection. |
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