Practicing Success
Practicing Success
CUET Preparation Today
A freshly prepared radioactive sample of half life 1 hour emits radiations that are 128 times as intense as the permissible safe limit. What is the minimum time after which the sample can be safely used? |
256 h 128 h 14 h 7 h |
7 h |
The correct answer is Option (4) → 7 h |
