Question

Threshold frequency is the :

• A. frequency of incident radiation enough to remove the electrons.
• B. frequency of the ejected electrons.
• C. frequency of the number of electrons ejected.
• D. maximum value of frequency of incident radiation.

Answer 1

The correct option is A frequency of incident radiation enough to remove the electrons.

Frequency of incident radiation enough to remove the electron.

Threshold frequency is defined as the minimum frequency of light which just emit electron from the metal surface if exposed to metal surface.