Physics - Modern Physics Question with Solution | TestHub
Photoelectric effect experiments are performed using three different metal plates and having work functions and , respectively. A light beam containing wavelengths of , and with equal intensities illuminates each of the plates. The correct graph for the experiment is
Options:
Answer:
Solution:
In the above equation represents maximum kinetic energy of photoelectrons and , the energy of incident right. From the above values we can see that stopping potential,
Further, their intensities are equal, but energy of individual photon of is maximum. Hence, number of photons incident (per unit area per unit time) of can be assumed to be least. Hence, saturation current of should be minimum.
Keeping these points in mind no option seems to be correct. The correct graph is shown below,