deepak
Last Activity: 7 Years ago
the radius of the trajectory of the particle is given by
r= MV / BQ where M is the mass of the proton V is its velocity in the field B is the magnetic field intensity Q is the charge
V =

here

is the accerating potential
therefor,
r= M
1/2 
/

B
hence
r
proton = M
e1/2 
/

B where M
e and e are the mass and the charges of proton
r
duetron = 
M
e1/2 
/

B since duetron has mass = 2M
e
r
alpha particle= 2 xM
e1/2 
/


B as mass od alpha particle is 4M
e and charge =2e
hence the ratio is 1 :

:

hence option 1 is correct
hope this is helpful XD