Chemistry
Which of the following statements is not correct about the characteristics of cathode rays ?
- They start from cathode and move towards anode.
- They do not depend upon the material of the electrode.
- Their characteristics depend upon the nature of the gas present in the cathode ray tube.
- They travel in straight lines in the absence of an external electrical or magnetic fields.
Atomic Structure
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Answer
Their characteristics depend upon the nature of the gas present in the cathode ray tube.
Reason - Cathode rays are independent of the gas present in the tube. Their properties remain the same in different gases.
Cathode rays are streams of electrons emitted from the cathode and attracted to the anode. Cathode rays have the same properties regardless of the electrode material. Cathode rays move in straight lines unless deflected by fields.
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