Dual Nature Of Light Question 181
Question: Surface of certain metal is first illuminated with light of wavelength $ {\lambda_{1}}=350nm $ and then, by light of wavelength $ {\lambda_{2}}=540nm. $ It is found that the maximum speed of the photo electrons in the two cases differ by a factor of (2) The work function of the metal (in eV) is (Energy of photon $ =\frac{1240}{\lambda (innm)}eV $ )
Solution:
Answer: 1.8
BETA
