Assertion :Cathode rays get deflected towards the negative plate of electric field. Reason: Cathode rays are negatively charged known as electrons.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
The electrons in cathode rays would adjust towards the positively charged path and away from negatively charged plates.
Cathode rays are so named because they are emitted by an electrode or cathode in a vacuum tube. Since the electrons have a negative charge, they are repelled by the cathode and attracted to the anode.
Therefore we conclude that option D is correct.

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