Which shape is likely to need more material for a critical mass, a cube or a sphere? Explain.
Solution 8E Step 1 : Let's understand critical mass : It is the smallest amount of material needed to sustain the reaction In a fission reaction reaction , critical mass is the smallest amount of fissionable material needed to sustain a fission reaction Step2 : Cube needs more critical mass as it has larger surface area to volume ratio than a sphere