The Work Function for a Particular Metal Is 4

question 9

Multiple Choice

The work function for a particular metal is 4.0 eV.Which one of the following best describes the wavelength of electromagnetic radiation needed to eject electrons from this metal?

• A)310 nm or greater
• B)310 nm or smaller
• C)620 nm or greater
• D)620 nm or smaller
• E)800 nm or greater

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