TS EAMCET 10-Sep-2020 Shift 2 Solved Paper
© examsiri.com
Question : 117 of 160
Marks:
+1,
-0
The half-life of a radioactive sample is 5 seconds. If the initial mass of the sample is60 grams then the time required to reduce the sample to 7.5 grams is:
Go to Question: