Q. For the photoelectric effect, the maximum kinetic energy $E_{k}$ of the emitted photoelectrons is plotted against the frequency $v$ of the incident photons as shown in the figure. The slope of the curve gives
A) Charge of the electron
B) Work function of the metal
C) Plank’s constant
D) Ratio of the Plank’s constant to electronic charge
Explanation
(c) Comparing Einstein’s equation $K_{\max} = hv - hv_{0},$ with $y = mx + c,$ we get slope, $m = h$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.