Question

A block of steel of size $5cm\times 5cm\times 5cm$ 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 of the steel block will be given by

$=V(\rho -\sigma )g$
$=5\times 5\times 5(7-1)g$

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