An electromagnetic wave of wavelength ' $\lambda$ ' is incident on a photosensitive surface of negligible…
An electromagnetic wave of wavelength ' $\lambda$ ' is incident on a photosensitive surface of negligible work function. If the photoelectrons emitted from this surface have the de-Broglie wavelength ' $\lambda_{1}{ }^{\prime}$ then
$\lambda \propto \frac{1}{\lambda_{1}}$
$\lambda \propto \lambda_{1}$
$\lambda \propto \lambda_{1}^{2}$
$\lambda \propto \frac{1}{\lambda_{1}^{2}}$
Solution
The de-Broglie wavelength of the emitted photoelectrons is related to the wavelength of the incident light. The correct relationship is given by: