A block of steel of size `5 cm xx 5cm xx 5cm` is weighed in water. If the relative density of steel is 7. its apparent weight is:

Options

A. `6 xx 5 xx 5 xx 5g`
B. ` 4 xx 4 xx 4 xx 7g`
C. `5 xx 5 xx 5 xx 7 g`
D. `5 xx 5 xx 5 xx 7 g`

Answer

A

Explanation

Weight of black of of steel in air ` = (5 xx 5 xx 5) xx 7 xx g`
weight of water displaced `= ( 5xx 5 xx 5 ) xx 1 xx g `
apparent weight
`= ( 5 xx 5 xx 5) xx 7 xx g - ( 5xx 5 xx 5) xx 7 xx g -(5 xx 5 xx5 ) xx 1 xx g = (5 xx 5 xx 5 xx 6) g`