Which one of the following is true in photoel | vedclass

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

Question

(B) The correct statement is that the photoelectric current is directly proportional to the intensity of light for a given frequency.$1$. Photoelectri

Vedclass · Accepted Answer

Photoelectric current is directly proportional to the intensity of light of a given frequency at moderate intensities.

Vedclass · Answer

(B) The correct statement is that the photoelectric current is directly proportional to the intensity of light for a given frequency.$1$. Photoelectric current is directly proportional to the number of photoelectrons emitted per second,which in turn is directly proportional to the intensity of incident light.$2$. The maximum kinetic energy $(K.E._{max})$ of photoelectrons is given by Einstein's photoelectric equation: $K.E._{max} = h
u - \phi$,where $h$ is Planck's constant,$
u$ is the frequency of incident light,and $\phi$ is the work function of the metal. Thus,$K.E._{max}$ is directly proportional to the frequency,not inversely.$3$. The threshold frequency is a characteristic property of the metal surface and does not depend on the intensity or wavelength of the incident light.Therefore,option $(B)$ is correct.

Which one of the following is true in photoelectric emission?

Similar Questions

In a photoelectric experiment,if both the intensity and frequency of the incident light are doubled,then the saturation photoelectric current

The anode voltage of a photocell is kept fixed. The frequency of the light falling on the cathode is gradually increased. Then the correct graph which shows the variation of photo current $I$ with the frequency $\nu$ of incident light is

The graph shows the variation of photocurrent with anode potential for four different radiations. Let $I_a, I_b, I_c$ and $I_d$ be the intensities and $f_a, f_b, f_c$ and $f_d$ be the frequencies for the curves $a, b, c$ and $d$ respectively,then

From the photoelectric effect experiment,select the correct statement.

When a monochromatic point source of light is at a distance of $0.2\, m$ from a photoelectric cell,the cut-off voltage and the saturation current are respectively $0.6\, V$ and $18.0\, mA$. If the same source is placed $0.6\, m$ away from the photoelectric cell,then

Vedclass Test Series

Exam Paper Generator

Online Exam Module