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The Threshold Wavelength for Photoelectric Emission of a Particular Substance

Question 4

Multiple Choice

The threshold wavelength for photoelectric emission of a particular substance is 500 nm.What is the work function (in eV) ?

A) 4.2
B) 4.0 *10-19
C) 4.0 * 10-10
D) 2.5 * 10-19
E) 2.5

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