Correct Option (1)
Let 'a' represent the side length of cube P. Consequently, the side length of cube Q is 2a.
- The volume of cube P, denoted as x, is a³.
- The volume of cube Q, denoted as y, is (2a)³ = 8a³.
- The mass of cube P is given as m.
- The mass of cube Q, denoted as n, is given as 2m.
Now, we define u and v:
- u = m/x = m/a³
- v = n/y = (2m)/(8a³) = m/(4a³)
Comparing u and v:
u/v = (m/a³) / (m/(4a³)) = (m/a³) * (4a³/m) = 4
Therefore, u = 4v.
Incorrect Options:
Options 2, 3, and 4 are incorrect because the derived relationship, based on the given parameters and definitions of u and v, unequivocally establishes that u = 4v. These options propose alternative relationships that are inconsistent with the mathematical derivation.