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

karthik , 7 Years ago
Grade 12
anser 1 Answers
Arun

Last Activity: 7 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.
 

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