Home
Class 12
PHYSICS
The threshold frequency for photoelectri...

The threshold frequency for photoelectric effect on sodium corresponds to a wavelength of `5000Å`. Its work function is

A

7.5 eV

B

2.5 eV

C

10 eV

D

5.0 eV

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Threshold wavelength for photoelectric effect on sodium is 5000 Å . Its work function is

The photoelectric work function

With reference to photo-electric effect, what is meant by threshold wavelength ?

Assertion : The threshold frequency of photoelectric effect supports the particle nature of light. Reason : If frequency of incident light is less than the threshold frequency, electrons are not emitted from metal surface.

Calculate the frequency corresponding to the wavelength 4000 Å

Einstein's work on photoelectric effect gives support to

Threshold frequency of a certain metal for photoelectric emission is 5xx10^(14)Hz . Calculate its work function.

Find the threshold wavelengths for photoelectric effect from a copper surface, a sodium surface and a cesium surface. The work functions of these metals are 4.5 eV, 2.3 eV and 1.9 eV respectively.

If the threshold frequency of a metal for photoelectric effect is v_(0) then which of the following will not happen ?

The threshold wavelength for ejection of electrons from a metal is 250 nm. The work function for the photoelectric emission from the metal is