Assertion :The enclosure of a Van de Graff generator is not evacuated. Reason: Vacuum does not facilitate ionisation or electrostatic induction.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The assertion is correct as the enclosure of Van de Graff generator is not evacuated. This is because the Van de Graff generator works on the principle of the charge ionization or electrostatic induction. But when it is enclosed in a vacuum, the vacuum does not facilitate ionization or electrostatic induction. Therefore, the reason is also correct and gives the correct explanation for an assertion.

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