Define the term "threshold frequency ", in the context of photolelectric emission.

Define the term "threshold freq uence", in the context of photolelectric emission.

Explain the term threshold frequency?

Define threshold frequency

Define the term collision frequency.

Photoelectric work function for a surface is 2.4 eV. Light of wavelength 6.8 xx 10^(-7) m shines on the surface. Find the frequency of incident light and also the threshold frequency. Will there be photoelectric emission or not ?

represents a graph of most energetic photoelectrons K_(max) (in eV) and frequency v for a metal used as cathod in photoelectrons experiment. The threshold frequency of light for the photoelectric emission from the metal is

K_("max") (in eV) = 3, and frequency of light (in Hz) =1xx10^(15) for a metal used as a cathode in a photoelectric experiment. The threshold frequency of light for the photoelectric emission from the metal is -