In the photoelectric effect:A. The photocurre | vedclass

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

Question

(A) $1$. The photocurrent is directly proportional to the intensity of the incident radiation because intensity is proportional to the number of incid

Vedclass · Accepted Answer

$A$ and $C$ only

Vedclass · Answer

(A) $1$. The photocurrent is directly proportional to the intensity of the incident radiation because intensity is proportional to the number of incident photons,which in turn is proportional to the number of emitted photoelectrons. Thus,statement $A$ is correct.$2$. According to Einstein's photoelectric equation,$KE_{\max} = h
u - \phi$,where $h$ is Planck's constant,$
u$ is the frequency of incident light,and $\phi$ is the work function of the metal. This equation shows that $KE_{\max}$ depends on the frequency of the incident light,not its intensity. Thus,statement $C$ is correct,while statements $B$ and $E$ are incorrect.$3$. The emission of photoelectrons requires a minimum threshold frequency,not a minimum threshold intensity. Thus,statement $D$ is incorrect.Therefore,statements $A$ and $C$ are correct.

Similar Questions

Consider the following statements: $(1)$ Both wave and particle nature are required for a complete understanding of light. $(2)$ Light cannot exhibit both wave and particle nature simultaneously in a single experiment.

Assertion: The specific charge of positive rays is not constant.
Reason: The mass of ions varies with speed.

In the following arrangement $y = 1.0\ mm$,$d = 0.24\ mm$ and $D = 1.2\ m$. The work function of the material of the emitter is $2.2\ eV$. The stopping potential $V_0$ needed to stop the photocurrent will be .............. $V$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module