Question

need small help with step !


thanks !!

Ranjan !
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Answer 1

hello Friend________✌️✌️✌️✌️

good morning___________

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here's your answer..........





Specific charge = charge /mass

Now, its convinient to take unit mass as ‘u’ and charge i am taking charge of proton as +1 and that of alpha particle as +2

Specific charge of proton = 1/1

Similarly that of alpha particle(which is nothing but that of He nucleus) =2/4=1/2

Ratio=2:1

Answer 2

Specific charge means Charge/Mass ratio.
Specific charge of proton = 1.
Specific charge of alpha particle = 2 ( 2 protons and 2 neutrons, neutrons have same mass as protons but charge is zero)
Therefore, ratio of specific charge of protons to alpha particles =1:2
so the correct option is (b)