Which of the following is Incorrect for cathode rays in discharge tube

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Independent of the nature of the gas

Is observed in straight lines in presence of electric field

Independent of the nature of the cathode

All the above

answer is C.

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Detailed Solution

The properties of cathode rays do not undergo any change. Thus it was concluded that the nature of the cathode rays does not depend on the nature of the gas-filled inside the discharge tube or the cathode used.

When an external electric field is applied, the cathode ray is deflected toward the positive pole.

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