KVPY 2019 SA Exam Previous Papers

Question : 44 of 80

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Among the following, the correct statement about cathode ray discharge tube is

the electrical discharge can only be observed at high pressure and at low voltages
in the absence of external electrical or magnetic field, cathode rays travel in straight lines
the characteristics of cathode rays depend upon the material of electrodes
the characteristics of cathode rays depend upon the gas present in the cathode ray tube

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