What is the work function of the metal if the light of wavelength generates photoelectrons of velocity from it ?
(Mass of electron =
Velocity of light =
Planck's constant =
Charge of electron = )
0.9eV
3.1eV
2.1eV
4.0eV
De-broglie wavelength -
- wherein
where m is the mass of the particle
v its velocity
p its momentum
Total energy of elctron in nth orbit -
Where z is atomic number
As we have learned in work function
-
0.9eV
Option 2)3.1eV
Option 3)2.1eV
Option 4)4.0eV
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