Assertion: We can measure the potential barrier of a `PN` junction by putting a sensitive voltmeter across its terminals. Reason: The current through the `PN` junction is not same in forward and reversed bias.A. If both the assertion and reason are true and reason is a true explantion of the assertion.B. If both the assertion and reason are true but the reason is not true the correct explantion of the assertion.C. If the assertion is true but reason falseD. If both the assertion and reason are false.

Assertion: We can measure the potential barrier of a `PN` junction by

1.	Assertion: We can measure the potential barrier of a `PN` junction by putting a sensitive voltmeter across its terminals. Reason: The current through the `PN` junction is not same in forward and reversed bias.A. If both the assertion and reason are true and reason is a true explantion of the assertion.B. If both the assertion and reason are true but the reason is not true the correct explantion of the assertion.C. If the assertion is true but reason falseD. If both the assertion and reason are false.
Answer» Correct Answer - D We cannot measure is potential barrier of a `PN`-junction by connecting a sensitive voltmenter across its terminals because in the depletion region, there are no free electrons and holes and in the absence of forward biasing, `PN` -junction offers infinite resistance.

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