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Question

The ratio of specific charge of a proton and and α-particle is :

A
2:1
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B
1:1
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C
1:4
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D
1:2
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Solution

The correct option is A 2:1
The ratio of specific charge of a proton and α-particle is 2:1.
Specific charge is the ratio of charge to mass.
For proton, specific charge is
11=1
For α-particle, specific charge is
24=0.5
The ratio of specific charge of a proton and and α-particle is
10.5=2:1

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