Question

03. The specific charge of a proton is 9.6 10°C kg-1, then for an a - particles it will be : 1) 2.4 x 107C kg- 2) 4.8 x 107C kg- 3) 19.2 x 10°C kg- 4) 38.4 x 10'C kg- -1​

Answer 1

Answer:

Explanation:

As given that proton has specific charge to be 9.6×10  

7

C kg  

−1

.  

Now as alpha particle is the Helium nucleus, so it must have +2 unit charge.

Specific charge of proton =  

mass of proton in particle

specific charge of proton

​

 

Alpha particle is doubly ionised He atom. It carries +2e charge (Twice the charge of proton and mass of alpha particle is (2 Neutrons + 2 Protons) is almost 4 times the mass of proton.

So, if Specific charge of Proton =  

m  

p

​

 

+e

​

 

Then, Specific charge of Alpha particle =  

4m  

p

​

 

+2e

​

= specific charge of proton × 1/2

So, Specific charge of alpha particle =  

9.6×10  7 /2

 

​

=4.8×10  7  Ckg  −1