The ratio e//m i.e. specific , for a cat...

The ratio `e//m` i.e. specific , for a cathode ray

A

has the smallest value when the discharge, tube is filled with `H_(2)`

B

is constant

C

Varies with the atomic number of gas in the discharge tube

D

Varies with the atomic number of an element forming the cathode

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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