A freshly prepared radioactive source of half life 2 hr emits
radiation of intensity which is 64 times the permissible safe
level. The minimum time after which it would be possible to
work safely with this source is
(a) 6 hr (b) 12 hr
(c) 24 hr (d) 128 hr
Answers
Answered by
3
Answer:
(b)12hr is the answer
Explanation:
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0
Answer:
12 hours
Explanation:
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