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The Sievert is the International System of Units related to
  • a)
    measuring average thickness of ozone layer over the earth’s surface.
  • b)
    level of mercury contamination in various water bodies.
  • c)
    measuring biological impact of ionizing radiation on human body.
  • d)
    effect of climate change on human Health.
Correct answer is option 'C'. Can you explain this answer?
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The Sievert is the International System of Units related toa)measuring...
  • The biological damage caused by the radiation depends upon the following factors :
    • the time of exposure
    • the intensity of the radiation
    • the type of ionizing radiation (i.e. its penetration power)
    • whether the radiation is emanating from outside or inside the human body.
  • On account of these factors the absorbed (or simply doses dose) designated as D, of the radiation to be the amount of energy deposited into a region of the body divided by the mass of the portion of the body that absorbed the radiation.
  • The MKS unit of absorbed dose is ‘gray’ (Gy), thus one gray is one joule of energy deposited per kg of mass. A more traditional unit of absorbed doses is radiation absorbed dose (rad). One rad is equivalent to 0.01 Gy.
  • Biological damage caused by a particle depends not only on the total energy deposited but also on the rate of energy loss per unit distance traversed by the particle. For example, alpha particles do much more damage per unit of energy deposited than do electrons (b-particles). This effect is represented by the quality factor Q taken 0 for electron and 20 for alpha particle.
  • The biological impact is specified by the human equivalent dose H, which is the product of the absorbed dose D and the quality factor Q: H = QD. The MKS unit of the human equivalent dose is called the sievert, Sv.
  • The sievert (symbol Sv) is the SI unit of dose equivalent and is dimensionally equivalent to one joule per kilogram. The sievert represents the stochastic effects of ionizing radiation as adjusted by a tissue weighting factor to account for differing responses of different human tissues to ionizing radiation and the differing effects of different forms and energies of this radiation. Hence option (c) is the correct answer.
  • Dobson Unit: The Dobson Unit is the most common unit for measuring ozone concentration. One Dobson Unit is the number of molecules of ozone that would be required to create a layer of pure ozone 0.01 millimeters thick at a temperature of 0 degrees Celsius and a pressure of 1 atmosphere (the air pressure at the surface of the Earth).
Community Answer
The Sievert is the International System of Units related toa)measuring...
B) measuring radioactivity c) measuring sound intensity d) measuring temperature e) measuring pressure.
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The Sievert is the International System of Units related toa)measuring average thickness of ozone layer over the earth’s surface.b)level of mercury contamination in various water bodies.c)measuring biological impact of ionizing radiation on human body.d)effect of climate change on human Health.Correct answer is option 'C'. Can you explain this answer?
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The Sievert is the International System of Units related toa)measuring average thickness of ozone layer over the earth’s surface.b)level of mercury contamination in various water bodies.c)measuring biological impact of ionizing radiation on human body.d)effect of climate change on human Health.Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about The Sievert is the International System of Units related toa)measuring average thickness of ozone layer over the earth’s surface.b)level of mercury contamination in various water bodies.c)measuring biological impact of ionizing radiation on human body.d)effect of climate change on human Health.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The Sievert is the International System of Units related toa)measuring average thickness of ozone layer over the earth’s surface.b)level of mercury contamination in various water bodies.c)measuring biological impact of ionizing radiation on human body.d)effect of climate change on human Health.Correct answer is option 'C'. Can you explain this answer?.
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