# A deuteron and an

Deuteron(+e,2mp)

-particle(+2e,4mp)

Deuteron has charge of +e and mass 2mp where mp is the mass of proton.

-particlehas charge of +2e and mass 4mp.

We know that force on a charged particle due to magnetic field is given by

where, q=charge

v=velocity

B=magnetic field

v and B are perpendicular in this case

Since here because

..........(1)

We can observe the trajectory is circular due to centrifugal force

Fc whose magnitude is given by

...........(2)

Equating 1 and 2

Rearranging we get,

Since momentum p=mv

Now,

For-particle

where q=2e

so,

For Deuteron

where q=e

so,

Now according to question,

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