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Assertion. Cathode rays originate from the cathode and move towards andoe.
Reason. Electrons present in the material of the cathode are continuously emitted on applying high voltage
A. If both assertion and reason are true, and reason is the true explanation of the arrertion
B. If both assertion and reason are true, but reason is not the true explanation of the assertional
C. If assertion is true, but reason is false
D. If both assertion and reason are false

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Correct Answer - D
Correct A. Cathode rays do not originate from cathode but are produced by the knock out of electrons of the atoms of the gas present in the discharge tube.
Correct R. Electrons are continuously produced from the atoms of the gas present in the discharge tube.

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