The correct option is C 1000
We know, volume of a cube of side(edge) 'a' is a3.
So, Volume of the cubical box,
V=(1×1×1) m3
V=1 m3
Volume of the small cube,
V′=(10×10×10) cm3
V′=1000 cm3
V′=0.001 m3 (∵1 m3=106 cm3)
Let the number of small cubes be 'n'.
Then, n×V=V′
⟹n=V′V
⟹n=10.001
⟹n=1000
∴ Number of small cubes that can be accommodated in the cubical box is 1000.