The work function of aluminium is 4.2 eV. If | vedclass

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

Question

(B) The work function $(\Phi)$ of aluminium is $4.2 \ eV$. According to the photoelectric effect, an electron is emitted only if the energy of an inci

Vedclass · Accepted Answer

Not possible

Vedclass · Answer

(B) The work function $(\Phi)$ of aluminium is $4.2 \ eV$. According to the photoelectric effect, an electron is emitted only if the energy of an incident photon $(E)$ is greater than or equal to the work function $(\Phi)$ of the metal surface. In this case, the energy of each incident photon is $3.5 \ eV$, which is less than the work function $(3.5 \ eV Since the photoelectric effect is a single-photon process where one photon interacts with one electron, the absorption of two photons by a single electron is an extremely rare event and does not contribute to the standard photoelectric emission process. Therefore, the emission of electrons is not possible.

The work function of aluminium is $4.2 \ eV$. If two photons, each of energy $3.5 \ eV$, strike an electron of aluminium, then the emission of electrons will be:

Similar Questions

$A$ small metal ball is suspended in a uniform electric field with the help of an insulated thread. If a high energy $X-$ray beam falls on the ball,then the ball

Which of the following statements is correct?

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

The material of the cathode in a photocell is changed such that the work function of the surface changes from $W_1$ to $W_2$ $(W_2 > W_1)$. If the photocurrents emitted before and after changing the cathode surface are $I_1$ and $I_2$ respectively,and $hf > W_2$,then:

The work function of a metal is defined as:

Vedclass Test Series

Exam Paper Generator

Online Exam Module