Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A capacitor of capacitance 
discharges through a resistor R. At the same time a radioactive substance decays with mean life 
. If ratio of charge on capacitor to activity of substance does not change with time, then find 
.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
(ratio is time independent)
(mean life)
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