If a metal has a work function 4.3 eV what is the minimum frequency for photo-emission? A)3.5 * 10⁸ Hz B)3.0 * 10¹⁰ Hz C)10.0 * 10⁸ Hz D)1.04 *10¹⁵ Hz E)1.0 Hz

Question

Quizplus · Accepted Answer

We know that the minimum frequency required for photoemission is given by:
f = work function / Planck's constant

Substituting the given values, we get:
f = 4.3 eV / (6.626 x 10^-34 J s * 1.602 x 10^-19 eV/J)
f ≈ 1.04 x 10^15 Hz

Therefore, the correct option is (D) 1.04 x 10^15 Hz.

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