A freshly prepared radioactive source of half life $2$ hr emited radiation of intencity which is $64$ times the permissibe level . The minimum time after which it would be possible to work safely with this source is

6 h r

12 h r

24 h r

128 h r

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A freshly prepared radioactive source of half life

2

hr emited radiation of intencity which is

64

times the permissibe level . The minimum time after which it would be possible to work safely with this source is

13 mins ago

Discuss this question LIVE

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Question Text	A freshly prepared radioactive source of half life $2$ hr emited radiation of intencity which is $64$ times the permissibe level . The minimum time after which it would be possible to work safely with this source is
Answer Type	Text solution:1
Upvotes	150