A Metal Having a Work Function of 2

question 40

Multiple Choice

A metal having a work function of 2.5 eV is illuminated with white light that has a continuous wavelength band from 400 nm to 700 nm.For which one of the following ranges of the wavelength band in this white light are photoelectrons NOT produced? (h = 6.626 × 10^-34 J ∙ s, c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10^-19 J)

• A)500 nm to 700 nm
• B)400 nm to 560 nm
• C)500 nm to 560 nm
• D)400 nm to 500 nm
• E)560 nm to 700 nm

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