MCQ
If threshold wavelength for sodium is $6800Å$ then the work function will be ............. $eV$
- ✓$1.8$
- B$2.5$
- C$2.1$
- D$1.4$
✓
Answer
Correct option: A.
$1.8$
a
(a) ${W_0} = \frac{{12375}}{{6800}} = 1.8\,eV$
(a) ${W_0} = \frac{{12375}}{{6800}} = 1.8\,eV$
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