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Questions  

The increasing order of e/m values for electron, proton, neutron and alpha particle is

a
e , p, n ,α
b
 n , p, e,α
c
p, n ,α, e 
d
 n ,α,p,e 

detailed solution

Correct option is D

charge to mass ratio of sub-atomic particles:  n ,α,p,e 

mass of electron is least, hence its specific charge value is found to be highest.

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