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The ration of spectific charge ( e//m) o...

The ration of spectific charge ( e//m) of a proton to that of an alpha-particle is :

A

`1 :4`

B

` 1:2`

C

` 1: 1//4`

D

` 2:1`

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Verified by Experts

The correct Answer is:
D
`e//m` "for proton" ` = (1)/(1)` , `e//m` "for alpha-"particle" ` = (2)/(4)` .
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