Question

A nuclear power planet supplying electrical power to a village uses a radioactive material of half life T years as the fuel. The amount of fuel at the beginning is 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 needs of the village for a maximum period of n T years, then the value of n is.

Answer 1

(E = Power requirement to the village, E = Power of plant)

E=E,/2³

Number of half life = 3

So total time required = 3 x T years