1.

Assertion(A): Threshold frequency is a characteristic for a metal Reason(R): Threshold frequency is a maximum frequency required for the ejection of electron from the metal surface.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true but reason is falseD. If the assertion and reason both are false

Answer» Correct Answer - C
Assertion is true but Reason is false . Threshold frequency is a minimum frequency required for the emission of electrons from the metal surface


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