What is the critical frequency of an incoming light that ejects electrons from a metal whose work function is E_A = 5.02 eV? [h = 6.63 × 10^-34 J s, 1 eV = 1.6 × 10^-19 J] A)1.2 × 10¹⁵ Hz B)2.5 × 10¹⁵ Hz C)4.7 × 10¹⁵ Hz D)7.6 × 10¹⁵ Hz

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Quizplus · Accepted Answer

The critical frequency (f) is calculated using the formula f = E/h, where E is the work function in joules. Converting 5.02 eV to joules gives 5.02 × 1.6 × 10^-19 J. Dividing by Planck's constant (h = 6.63 × 10^-34 J s) gives approximately 1.2 × 10^15 Hz.

What Is the Critical Frequency of an Incoming Light That