When a Metal Is Illuminated by Light, Photoelectrons Are Observed $520 \mathrm {~nm}$

question 180

Multiple Choice

When a metal is illuminated by light, photoelectrons are observed provided that the wavelength of the light is less than $520 \mathrm {~nm}$ . What is the metal's work function? ( $c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = 6.626 \times$ $10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } , 1 \mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J}$ )

• A) \(2.6 \mathrm { eV }\)
• B) \(2.8 \mathrm { eV }\)
• C) \(3.0 \mathrm { eV }\)
• D) \(2.4 \mathrm { eV }\)

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Any intense and persistent sexual interest other than sexual interest in genital stimulation or preparatory fondling with phenotypically normal, physically mature, consenting human partners.

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