Answer:
Option A
Explanation:
Let V1= total material volume of shell
V2= total inside volume of shell and
x = fraction of V2 volume filled with water.
ln floating condition,
Total weight = Upthrust
∴ V1ρcg+(xV2)(1)g=(V1+V22)(1)g
or x=0.5+(0.5+ρc)V1V2
from here we can see that
x>0.5 if ρc<0.5