1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

A radioactive sample at any instant has its disintegration rate 5000 disintegrations per min. After 5 min, the rate is 1250 disintegrations per min. Then, the disintegration constant (per min) is

A
0.4 loge 2
B
0.2 loge 2
C
0.1 loge 2
D
0.8 loge 2
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