List of top Chemistry Questions on Photoelectric Effect

If the frequency of incident light is doubled, what happens to the stopping potential? ____.

Consider the following metals: Li, Na, K, Cu, Mg and Ag. The metals with the lowest and highest work function are respectively

Consider the following statements about photoelectric effect:
(i) There is time lag between the striking of light beam and the ejection of electrons from the metal surface.
(ii) The number of electrons ejected is directly proportional to the intensity or brightness of light.
(iii) For each metal, there is a characteristic minimum frequency, known as threshold frequency (\(\nu_0\)) below which photoelectric effect is not observed.
(iv) At a frequency greater than \(\nu_0\), the ejected electrons come out with certain kinetic energy. The kinetic energies of these electrons increase with the increase of the wavelength of the light used.
Which of the above statements are true?

The work function of a metal depends on

When a metal of work function $4\text{ eV}$ is exposed to radiation, the maximum kinetic energy of the emitted electrons is $4\text{ eV}$. The stopping potential required is:

The variation of the stopping potential ($V_0$) with the frequency of incident radiation ($\nu$) is plotted. If $\nu_0$ is the threshold frequency, $h$ is Planck's constant, and $e$ is the electronic charge, then the slope of the graph with the frequency axis is:

The maximum energy of photoelectron depends on __________.

In photoelectric effect, the stopping potential depends on:

The maximum kinetic energy of photoelectrons depends on:

What is the relationship between maximum kinetic energy and wavelength in the photoelectric effect?

The work function of a material that has the threshold frequency of \(5 \times 10^{14} \, Hz\) is (\(h = 6.626 \times 10^{-34}\) Js).

The minimum energy required to remove an electron from sodium atom is $3.313 \times 10^{-19}J$. What is the maximum wavelength of radiation that will eject photoelectron from sodium metal? ($h = 6.626 \times 10^{-34}Js$)

If the threshold wavelengths of two metals are in the ratio $1:3$, then the work functions of these metals are in the ratio

How does the maximum kinetic energy of photoelectrons relate to wavelength (\(\lambda\))?

A 250 watt bulb emits monochromatic light wavelength 198.78 nm. How many photons are emitted by the bulb per second?

Find difference in work function of two different metal if their stopping potential are 0.4V and 1.6V respectively.(metals are illuminated with photons of same energy)

A 250W bulb emit light of wavelength 19.6nm. Find the no of electron emitted per second

Minimum energy required to remove an atom from sodium is \( 3.313 \times 10^{-19} \text{g.} \) Maximum wavelength of radiation that will get photoelectron

What is the energy of a photon of frequency \( \nu \)?

Find the energy of a photon with a wavelength of \(4000\,\text{\AA}\). (Take \( h = 6.63 \times 10^{-34}\,\text{Js} \), \( c = 3 \times 10^8\,\text{m/s} \)).

Above the threshold frequency, if the intensity of incident light falling on a photo sensitive material is increased, then the correct statement is:

Which one of the following statements is INCORRECT regarding the photoelectric effect?

If the threshold wavelength of a photoelectric material lies in the green light region, then which one of the following light will not emit photoelectrons?

A plot of kinetic energy of emitted photoelectrons from a metal versus the frequency of incident radiation gives a straight line, the intercept of which: