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A freshly prepared radioactive source of half-life 2 h 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:
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Text solutionVerified
The intensity of radioactive decay after time is
Hence half life is given by
The intensity must drop to of its present intensity to work safely.
Hence,
Hence half life is given by
The intensity must drop to of its present intensity to work safely.
Hence,
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Question Text | A freshly prepared radioactive source of half-life 2 h 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: |
Updated On | May 5, 2023 |
Topic | Nuclei |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 8 |
Upvotes | 832 |
Avg. Video Duration | 10 min |