From the figure describing the photoelectric | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) According to Einstein's photoelectric equation,the maximum kinetic energy $K_{max}$ of emitted photoelectrons is given by $K_{max} = h
u - \Phi_0

Vedclass · Accepted Answer

Maximum kinetic energy for both the metals depends linearly on the frequency.

Vedclass · Answer

(B) According to Einstein's photoelectric equation,the maximum kinetic energy $K_{max}$ of emitted photoelectrons is given by $K_{max} = h
u - \Phi_0$,where $h$ is Planck's constant,$
u$ is the frequency of incident light,and $\Phi_0$ is the work function of the metal.Since the stopping potential $V_s$ is related to the maximum kinetic energy by $eV_s = K_{max}$,we have $V_s = \frac{h}{e}
u - \frac{\Phi_0}{e}$.This equation represents a straight line with a slope of $\frac{h}{e}$.In the given graph,the stopping potential $V_s$ is plotted against frequency $
u$ for two metals,$Na$ and $Al$.Since both lines are straight and parallel (having the same angle $	heta$),it confirms that the maximum kinetic energy for both metals depends linearly on the frequency of the incident radiation.

From the figure describing the photoelectric effect,we may infer correctly that:

Similar Questions

The maximum velocity of the photoelectrons emitted from the surface is $v$ when light of frequency $n$ falls on a metal surface. If the incident frequency is increased to $3n$,the maximum velocity of the ejected photoelectrons will be:

The kinetic energy with which electrons are emitted from a metal surface due to the photoelectric effect is:

The slope of the graph between stopping potential and the frequency of incident radiation for the photoelectric effect is . . . . . . .

Vedclass Test Series

Exam Paper Generator

Online Exam Module