SSC MTS EXAM

SSC

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
the minimum frequency for which the photoelectric effect can occur is called the
A
absolute frequency
B
cut off frequency
C
Lyman frequency
D
threshold frequency
Explanation: 

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.

There is 1 question to complete.