11. The ratio of e/m values of a proton and an a-particle is: (A) 2:1(C) 1:2(B) 1:1(D) 1:4

11. The ratio of e/m values of a proton and an a-particle is: (A) 2:

1.	11. The ratio of e/m values of a proton and an a-particle is: (A) 2:1(C) 1:2(B) 1:1(D) 1:4
Answer» D..........................