The em value of proton is

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The $\frac{e}{m}$ value of proton is

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equal to $\frac{e}{m}$ value of electron

Independent on nature of gas

less than $\frac{e}{m}$ value of electron

greater than $\frac{e}{m}$ value of electron

answer is A.

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Detailed Solution

$\frac{e}{m}$ value of proton is less than $\frac{e}{m}$ value of electron. Because mass of the anode rays different for different gas, mass is increases. So $\frac{e}{m}$ value for heavier gas is very less.

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