Assertion :An electric field is preferred in comparison to magnetic field for detecting the electron beam in a television picture tube. Reason: Electric field requires low voltage.

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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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
If electric field is used for detecting electron beam, then very high voltage has to be applied or very large tube will have to be taken. Therefore, both assertion and reason are wrong.

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