JEE (Advanced) 2015 Paper-1 Question 6

Question 6

A nuclear power plant supplying electrical power to a village uses a radioactive material of half life 7’ years as the fuel. The amountof fuel at the beginningis such that the total power requirement of the village is 12.5% of the electrical power available from the plant at that time. If the plant is able to meet the total power needsof the village for a maximum period of nT years, then the valueof n is


Correct Answer: 3



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