Emission of electrons in photoelectric effect is possible, if

Metal surface is highly polished

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The incident light is of sufficiently high intensity

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The light is incident at right angles to the surface

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The incident light is of sufficiently low wavelength

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D The incident light is of sufficiently low wavelength
Photo electric emission occurs if frequency of incident light is greater than a threshold value.
And, $v α \frac{1}{λ}$
$∴$ for sufficiently low wavelength $λ$ , emission an of electrons is possible.

Suggest Corrections

Similar questions

Q. Light of wavelength 5000

A^{0}

is incident on a metallic surface of work function 3.31 eV. Then photoelectric emission is

Q. When light of sufficiently high frequency is incident on a metallic surface, electrons are emitted from the metallic surface. This phenomenon is called photoelectric emission. Kinetic energy of the emitted photoelectrons depends on the wavelength of incident light and is independent of the intensity of light. Number of emitted photoelectrons depends on intensity.

(h ν - ϕ)

is the maximum kinetic energy of emitted photoelectrons (where

ϕ

is the work function of metallic surface). Reverse effect of photo emission produces X-ray. X-ray is not deflected by electric and magnetic fields. Wavelength of a continuous X-ray depends on potential difference across the tube. Wavelength of characteristic X-ray depends on the atomic number. If potential difference across the tube is increased then:

For photoelectric emission, tungsten requires light of $2300 \circ A$ . If light of $1800 \circ A$ wavelength is incident then emission

Q. Light strikes a sodium surface, causing photoelectric emission. The stopping potential for the ejected electrons is

5.0 V

and the work function of sodium is

2.2 e V

. What is the wavelength of the incident light?

Light strikes a sodium surface, causing photoelectric emission. The stopping potential for the ejected electrons is 5.0 V, and the work function of sodium is 2.2 eV. What is the wavelength of the incident light? __nm.

Join BYJU'S Learning Program

Emission of electrons in photoelectric effect is possible, if

The correct option is D The incident light is of sufficiently low wavelengthPhoto electric emission occurs if frequency of incident light is greater than a threshold value.And, vα1λ∴ for sufficiently low wavelength λ, emission an of electrons is possible.

The correct option is D The incident light is of sufficiently low wavelength
Photo electric emission occurs if frequency of incident light is greater than a threshold value.
And, $v α \frac{1}{λ}$
$∴$ for sufficiently low wavelength $λ$ , emission an of electrons is possible.