The photoelectric minimum (threshold)frequency for a material is 3.3 * 10^-7 m.What is the work function for this material? A)9.2 eV B)5.6 eV C)3.8 eV D)6.1 eV E)4.9 eV

Question

Quizplus · Accepted Answer

The work function can be calculated using the formula E = hf - Φ, where E is the energy of a photon with frequency f, h is Planck's constant, and Φ is the work function. Rearranging the formula, we get Φ = hf - E. Plugging in the given threshold frequency f = 3.3 × 10^14 Hz and using the value of Planck's constant h = 6.626 × 10^-34 J s, we get Φ = (6.626 × 10^-34 J s)(3.3 × 10^14 Hz) - (0 eV) = 2.182 eV. The closest answer choice is C, 3.8 eV, which is within a reasonable margin of error.

The Photoelectric Minimum (Threshold)frequency for a Material Is 3