Teaching MPPSC Assistant Professor Mock Test Series 2025 Physics Dual Nature: Photon and Matter Waves Einstein’s Photoelectric Equation
An electromagnetic wave of wavelength ‘λ’ is incident on a photosensitive surface of negligible work function. If ‘m’ mass is of photoelectron emitted from the surface has de-Broglie wavelength λd, then :
1
\(\lambda = \left( {\frac{{2h}}{{mc}}} \right)\lambda {d^2}\)
2
\(\lambda = \left( {\frac{{2m}}{{hc}}} \right)\lambda {d^2}\)
3
\({\lambda _d} = \left( {\frac{{2mc}}{h}} \right){\lambda ^2}\)
4
\(\lambda = \left( {\frac{{2mc}}{h}} \right){\lambda _d}^2\)