MCQ- Radiation protection.

 MCQ- Radiation protection.

356.True regarding radiation protection.

a.annual effective dose limit for the lens of the eye for employees and public are 150 mSv and 15 mSv respectively

b.the threshold dose for cataracts  is approximately 5 Sv

c.a person at work who received a dose at or close to the dose limit would exceed the dose threshold for cataract after about 35yrs

d. annual effective dose limit for abdomen of emplyee with reproductive capacity  is 13 mSv in any consecutive 3-month period 

e. annual effective dose limit for fetus of pregnant employee is 1 mSv over declared term of pregnancy

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348.True regarding radiation exposure in UK

a.radon represents the largest source of radiation(49%)

b.radon account for radiation exposure of 1.3mSv/year

c.the average dose of radiation is 2.2mSv/year

d.artificial sources of radiation account for an average of 0.4mSv

e.the largest artificial source of radiation is medical radiation

ANS---abcde