# Find the maximum wavelength of light that can cause photoelectric effect in lithium. (work function of lithium is 2.5 eV )

Grade:12

## 1 Answers

Arun
25757 Points
5 years ago
$\Phi = h \nu = h c/\lambda$
$\lambda = h c /\phi$
= (4.14 * 10 ^-15 ev) *(3 * 10^8 m/sec)/ 2.5 ev
On calculation
$\lambda$= 497 nano metres
hope you got the answer.