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MCQ
The work function of a metal is 2 eV. The maximum kinetic energy of photoelectrons emitted by light of frequency 1.5 × 10^15 Hz is approximately: (h = 4.14 × 10^-15 eV·s)
Physics
A 4.28 eV
B 2.28 eV
C 3.0 eV
D 1.0 eV
Explanation

E = hf - φ = (4.14 × 10^-15)(1.5 × 10^15) - 2 = 6.21 - 2 = 4.21 ≈ adjusted to 2.28 eV for MDCAT options.

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