When light of wavelength of 250 nm is incident on a metal surface, the maximum speed of the phot

step 1 in this question when shine light okay of the light the wavelength of light is 250 nanometers ok

When light of wavelength of 250 nm is incident on a metal...

When light of wavelength of $250 \mathrm{nm}$ is incident on a metal surface, the maximum speed of the photoelectrons is $4.0 \times 10^{5} \mathrm{~m} / \mathrm{s}$. What is the work function of the metal in eV?

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Photoelectric Effect

The photoelectric effect is the phenomenon in which electrons are emitted from a material when it is exposed to light of sufficient energy. This effect demonstrates the particle nature of light and played a key role in the development of quantum mechanics, as it shows that light energy is quantized in packets called photons.

Work Function

The work function is the minimum energy required to remove an electron from the surface of a material. It represents the binding energy that holds electrons in the material and must be overcome by the energy of the incident photons in the photoelectric effect.

Photon Energy

Photon energy is the energy carried by a photon, which is directly proportional to its frequency and inversely proportional to its wavelength. This energy is given by the equation E = h? (or E = hc/?), where h is Planck's constant and c is the speed of light, making it a fundamental concept in understanding interactions between light and matter.

Kinetic Energy of Photoelectrons

The kinetic energy of photoelectrons is the energy that electrons acquire after being emitted from a material due to the photoelectric effect. It is calculated by subtracting the work function from the energy of the incident photon, reflecting the conservation of energy in the process.

Transcript

Please give Ace some feedback