Light of Wavelength 439 Nm Is Incident on a Metallic

question 6

Multiple Choice

Light of wavelength 439 nm is incident on a metallic surface with a resultant photoelectric stopping potential of 1.2 V.What is the work function of the metal? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

• A)1.63 eV
• B)2.83 eV
• C)4.03 eV
• D)0.82 eV
• E)​2.02 eV

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