Exam-style question
Try this first
What is the work function of a metal if the threshold frequency is 6 x 10^14 Hz?.
- A.3.97 x 10^-19 J
- B.4.00 x 10^-19 J
- C.2.48 x 10^-19 J
- D.5.00 x 10^-19 J
Model answer
What a good answer should say
- 3.97 x 10^-19 J
Explanation
Why this works
The work function can be calculated using the equation W = hf, where h is Planck's constant. This demonstrates how the threshold frequency is linked to the minimum energy required to emit an electron from the metal surface.
Common mistake
No common mistake is linked to this question yet.