Given that photon of light of wavelength 10000 Ao has an energy equal to 1 23 eV When a - Physics - Dual Nature Of Radiation And Matter

Question

Given that photon of light of wavelength 10000 Ao has
an energy equal to 1 23 eV When a light of wavelength
5000Ao adn intnsity I falls on photoelectric cell, the
surface current is 0 40 X 106 A Stopping potential is 1
36eV, then what is the work function? (1 Ao =
10-10m)

Hansraj Rai · Accepted Answer

Energy of a photon the 1st radiation,

$E = h \frac{c}{λ} = h \frac{c}{10000 A^{0}} = 1.23 e V E' = h \frac{c}{λ'} = h \frac{c}{5000 A^{0}} = 2 E = 2.46 e V$

According to the problem,

$E' = h ν' = w_{0} + V_{0} 2.46 = w_{0} + 1.36 w_{0} = 1.10 e V$

Given that photon of light of wavelength 10000 Ao has an energy equal to 1.23 eV. When a light of wavelength 5000Ao adn intnsity I falls on photoelectric cell, the surface current is 0.40 X 106 A. Stopping potential is 1.36eV, then what is the work function? (1 Ao = 10-10m)

Given that photon of light of wavelength 10000 A^o has an energy equal to 1.23 eV. When a light of wavelength 5000A^o adn intnsity I falls on photoelectric cell, the surface current is 0.40 X 10⁶ A. Stopping potential is 1.36eV, then what is the work function? (1 A^o=10^-10m)