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

In a photoelectric experiment,increasing the intensity of incident light :

$A$ photocell employs the photoelectric effect to convert

What is a photoelectron?

Give an outline of the experimental study of the photoelectric effect.

$A$ photocell is illuminated by a small bright source placed $d \; m$ away. When the same source of light is placed $\frac{d}{2} \; m$ away,the number of electrons emitted by the photocathode would

Vedclass Test Series

Exam Paper Generator

Online Exam Module