JEE Previous Year Question

A radioactive sample has an average life of 30ms and is decaying. A capacitor of capacitance is first charged and later connected with resistor ‘R’. If the ratio of charge on capacitor to the activity of radioactive sample is fixed with respect to time then the value of 'R' should be ___ .

Topic: JEE PYQ

Answer: 150. Full step-by-step solution below.

Correct answer: 150

Solution

(150)



Since q/N is constant hence

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