Question

Write Einstein’s photoelectric equation?

Answer 1

Einstein’s photoelectric effect equation:

(NOTE: Use any one of three given equations)

hv = φ₀ + K.E

where, h = Planck's constant, v = frequency of the incomig photons

φ_{0 =} work function of the material and K.E = kinetic energy of the emitted electrons 

or

`hv = phi_0 + 1/2 mv_max^2 `=

where,h = Planck's constant,v = frequency of the incoming photons

φ_o = work function of the material, 1/2 mv_max^2`kinetic energy of the emitted electrons 

V_max = maximum velocity of emitted electron

or

`1/2 mv_max^2 = h(v - v_o)`

where h = Planck's constant, v = frequency of the incoming photons 

v_o = threshold frequency, `1/2 mv_max^2= ` kinetic energy of the emitted electrons

v_max = maximum velocity of emitted electron