A Metal Having a Work Function of 2

question 30

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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Definitions:

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A measure of a company's financial performance that shows the net profit after deducting the cost of capital.

Imputed Interest Rate

An estimated interest rate used in accounting when no explicit interest is specified in a financial transaction, helping to assign a fair value to future payments.

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