Question 1 : The equivalent dose at 3 meter is 500 mSv/ hour, what will be the equivalent dose at 7 meter for an hour?
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Question 2 : P-32 isotope after preparation , is measured using portable contamination monitor of 10 cm² area is 450 CPM . Is it safe? Contamination limit is 4 Bq/cm² .
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Question 3: Can we place a 2Ci HDR Co⁶⁰ source in a 10 Ci HDR Ir¹⁹² concrete shielding room?
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Question 4: A Protective apron containing 2 HVL of lead equivalent is used to protect a radiologist against scatter radiation . The scatter radiation during fluoroscopy at the radiologist location is about 30 mR/hr . How many minutes per week of fluoroscopy , radiologist may undertake to keep the annual dose below10 mSv?
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