Light of frequency 1.5 nu_0 (where nu_0 is th | vedclass

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

Question

(D) The threshold frequency of the material is $
u_0$. The initial frequency of incident light is $
u_1 = 1.5 
u_0$. Since $
u_1 > 
u_0$,photoele

Vedclass · Accepted Answer

zero

Vedclass · Answer

(D) The threshold frequency of the material is $
u_0$. The initial frequency of incident light is $
u_1 = 1.5 
u_0$. Since $
u_1 > 
u_0$,photoelectric emission occurs.When the frequency is halved,the new frequency becomes $
u_2 = \frac{1.5 
u_0}{2} = 0.75 
u_0$.For photoelectric emission to occur,the incident frequency must be greater than or equal to the threshold frequency $(
u \ge 
u_0)$.Since $0.75 
u_0 Therefore,no photoelectric emission will take place regardless of the intensity of the incident light.Thus,the photocurrent becomes zero.

Light of frequency $1.5 \nu_0$ (where $\nu_0$ is the threshold frequency) is incident on a photosensitive material. If the frequency is halved and the intensity is doubled,what happens to the photocurrent?

Similar Questions

Which of the following statements is correct?

$A$ photoelectric cell is illuminated by a point source of light kept at a distance $d$. If the distance is reduced to $d/2$,then the number of electrons emitted per second will be:

What is the phenomenon of the photoelectric effect?

The number of photo-electrons emitted per second from a metal surface increases when:

In the photoelectric effect,electrons are emitted from a metal surface only when the incident light has a certain minimum . . . . . . .

Vedclass Test Series

Exam Paper Generator

Online Exam Module