No photo electrons are emitted from a surface, if the radiation is above 5000 Ǻ. With an unknown wavelength, the stopping potential is 3V. Find the wave length.
Answers
Answered by
2
Answer:
Explanation :
Einstein's photoelectric equation :
hcλ=e(3V0)+W−−−−(1)
Here W=work function ; and hcλ=e(V0)+W−−−−(2)
Solving equations
(1)-(2)
hcλ=3hc2λ−W−3W
2W=hc2λ
hcλ0=hc4π
λ0=4λwhenλ0=
threshold wavelength
Explanation:
Similar questions