Question
Download Solution PDFThe unit of radiation exposure is
This question was previously asked in
TNPSC Group 4 Official Paper 2011 (Held on: 07 Aug 2011)
Answer (Detailed Solution Below)
Option 4 : roentgen.
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TNPSC Group 2 CT : General Tamil (Mock Test பயிற்சித் தேர்வு)
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Detailed Solution
Download Solution PDFThe correct answer is roentgen.
Key Points
- The unit of radiation exposure is measured in roentgen, which is a unit of measurement for ionizing radiation.
- The roentgen is used to quantify the amount of ionizing radiation that produces 1 electrostatic unit of charge in 1 cubic centimetre of dry air.
- This unit is named after the German physicist Wilhelm Röntgen, who discovered X-rays.
- Roentgen measures the exposure of radiation but does not directly measure the absorbed dose or biological effect, which is measured in other units like rad or sievert.
- It is primarily used in the context of X-ray and gamma-ray radiation.
Additional Information
- Candela is the unit of luminous intensity in a given direction, used in photometry.
- Dioptre is the unit of measurement for the optical power of a lens or curved mirror.
- Kelvin is the base unit of temperature in the International System of Units (SI).
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