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QUESTION 7
A metal having a work function of 2.8 eV is illuminated with monochromatic light whose photon energy is 3.9 eV. What is the
threshold frequency for photoelectron production? (h-6.626 x 10-34 J-s-4.141 x 10-15, eV s, 1 eV 1.60 x 10-19 J
CA
8.5 x 10¹4 Hz
OB.
OC
6.8 x 10¹4 Hz
7.6 × 10¹4 Hz
2.7 x 10¹4 Hz

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