Proton , deuton and alpha particle of same kinetic energy are moving in circular trajectories in a constant magnetic field. The radii of proton , deuteron and alpha particle are respectively `r_(p), r_(d) and r_(alpha)`. Which one of the following relation is correct?
A
`r_(alpha) = r_(p) = r_(d)`
B
`r_(alpha) = r_(p) lt r_(d)`
C
`r_(alpha) gt r_(d) gt r_(p)`
D
`r_(alpha) = r_(d) gt r_(p)`
Text Solution
Verified by Experts
The correct Answer is:
B
`r = (sqrt(2 mv))/(qB) rArr r xx vsqrt(m)/(q)` Thus we have , `r_(alpha) = r_(p) lt r_(d)`
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