Assertion :As work function of a material increase by some mechanism, it requires greater energy to excite the electrons from its surface. Reason: A plot of stopping potential (Vs) versus frequency (v) for different metals, has greater slope for metals with greater work functions.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Both Assertion and Reason are incorrect
A
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
B
Assertion is correct but Reason is incorrect
C
Both Assertion and Reason are incorrect
D
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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Solution
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The correct option is C Assertion is correct but Reason is incorrect As eVs=hv−W Vs=(he)v−(We) For Vs versus v graph, slope=he=constant.
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