Question

Q2 The increasing order(lowest first ) for the values of e/m (charge/mass) for electron (e),proton(p),neutron(n) and alpha(α) is
a) e ,p ,n ,α
b) n ,p ,e ,α
c) n, p, α, e
d) n, α, p, e

Answer 1

HI FRIEND !

THE ANSWER IS
d) n, α, p, e

since neutron has no charge, e/m is zero for neutron. since a -particle has very high mass compared to electron as well as proton there will be a very small e/m ratio. Proton and electron have same charge but former is just heavier, hence has smaller value of e/m. 

# hope this helps u....

Answer 2

The increasing order is n,a,p,e