Question
Chemistry Question on Occurrence Of Metals
| Values of work function (Wo) for a few metals are given below Metal | Li | Na | K | Mg | Cu | Ag |
|---|---|---|---|---|---|---|
| Wo/eV | 2.42 | 2.3 | 2.25 | 3.7 | 4.8 | 4.3 |
The number of metals which will show photoelectric effect when light of wavelength 400nm falls on it is____
Given: h = 6.6 × 10-34 J s
c = 3 x 108 m s-1
e = 1.6 x 10-19 C
Answer
The correct Answer is: 3