The number of photoelectrons emitted for ligh | vedclass

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

Question

(B) According to the photoelectric effect,the number of photoelectrons emitted per unit time is directly proportional to the number of incident photon

Vedclass · Accepted Answer

intensity of light $(I)$

Vedclass · Answer

(B) According to the photoelectric effect,the number of photoelectrons emitted per unit time is directly proportional to the number of incident photons per unit time.Since the intensity of light $(I)$ is defined as the energy incident per unit area per unit time,and for a given frequency,the energy of each photon is constant $(E = hv)$,the intensity is directly proportional to the number of incident photons.Therefore,the number of photoelectrons emitted is directly proportional to the intensity of the incident light $(I)$,provided the frequency $v$ is greater than the threshold frequency $v_0$.

The number of photoelectrons emitted for light of frequency $v$ (higher than the threshold frequency $v_0$) is proportional to

Similar Questions

Assertion : Photoelectric saturation current increases with the increase in frequency of incident light.
Reason : Energy of incident photons increases with increase in frequency and as a result photoelectric current increases.

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?

Photoelectric effect is produced by a point source on a small metal plate. Which of the following curves represents the saturation photoelectric current as a function of the distance between the source and the metal?

Light of wavelength $4000 Å$ is incident on a sodium surface for which the threshold wavelength of photoelectrons is $5420 Å$. The work function of sodium is (in $eV$)

What is the photoelectric effect?

Vedclass Test Series

Exam Paper Generator

Online Exam Module