The stopping potential is more negative for higher frequencies of incident radiations. This means that greater the frequency of incident radiations, greater is the maximum kinetic energy of the photo electrons. That is why a greater retarding potential is required to stop them completely.
Q. Which stop as soon as the incident radiation is cut off?
If the luminescence immediately stops when the exciting radiation is cut off, it is fluorescence; if the luminescence continues, it is phosphorescence. The detector is usually placed perpendicular to the path of the incident radiation in order to eliminate the possibility of monitoring the incident radiation.
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Q. What is the difference between emission and radiation?
Emission is the production and discharge of something, especially gas or radiation. The main difference between radiation and emission is that radiation is the process of carrying what is emitted whereas emission is the process of formation and release of something.
Q. What is the process of radiation?
the process in which energy is emitted as particles or waves. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and absorbed by another body. the energy transferred by these processes.
Q. What is the main result to the body when over exposed to non ionizing radiation?
Exposure to intense, direct amounts of non-ionizing radiation may result in damage to tissue due to heat. This is not common and mainly of concern in the workplace for those who work on large sources of non-ionizing radiation devices and instruments.
Q. What determines the quality of radiation?
Radiation quality is determined by the X-ray tube potential selected and the filtration of the X-ray beam. Metal filters are fitted to X-ray tubes to attenuate lower energy photons that are unlikely to reach the image receptor.
