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Faraday's First Law

Assertion :Ca...

Question

Assertion :Cathode rays get deflected towards the positive plate of electric field. Reason: Cathode rays consist of negatively charged particles known as electrons.

A

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

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B

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

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C

Assertion is correct but Reason is incorrect.

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D

Assertion is incorrect but Reason is correct.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
A cathode ray is a stream of electrons that are seen in vacuum tubes. It is called a "cathode ray" because the electrons are being emitted from the negative charged element in the vacuum tube called the cathode.

Deflection of Cathode Rays by an Electric Field - The application of high voltage to capacitor plates creates an electric field. When a cathode ray is passed through this electric field, the negatively charged electrons are deflected toward the positive charged plate and away from the negatively charged plate.

Therefore, option A is correct.

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