Question

A block of steel of size 5 cm $\times$ 5 cm $\times$ 5 cm is weighed in water. If the relative density of steel is 7, its apparent weight is

• A. $6\times 5\times 5\times 5$gf
• B. $4\times 4\times 4\times 7$gf
• C. $5\times 5\times 5\times 7$gf
• D. $4\times 4\times 4\times 6$gf

Answer 1

The correct option is A

$6\times 5\times 5\times 5$gf

Apparent weight = $V(\rho -\sigma )g$

$=5\times 5\times 5(7-1)g=6\times 5\times 5\times 5$gf