SSC
PHYSICS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
absolute frequency
|
|
cut off frequency
|
|
Lyman frequency
|
|
threshold frequency
|
Detailed explanation-1: -It is the minimum frequency of the incident light or radiation that will produce a photoelectric effect, i.e., the ejection of photoelectrons from a metal surface is known as the threshold frequency for the metal. It is constant for a specific metal but may be different for different metals.
Detailed explanation-2: -The threshold frequency is defined as the minimum frequency of incident radiation below which the photoelectric emission is not possible completely. irrespective of the intensity of incident radiation.
Detailed explanation-3: -The minimum frequency of incident radiation for which photo electrons are just emitted from the photosensitive material is called Threshold frequency.
Detailed explanation-4: -Threshold frequency is the maximum frequency required for the ejection of electron from the metal surface.