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Assertion: In vacuum tubes (vales), vacu...

Assertion: In vacuum tubes (vales), vacuum is necessary for the movement of electrons between electrods otherwise electrons collide with air and loss their energy.
Reason: In semiconductor devices, external heating or vacuum is not required.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

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The correct Answer is:
B
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ERRORLESS -ELECTRONICS-Selv Evaluation Test
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