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Physics

Fluid-Mechanics

Easy

Question

A metallic block weighs 15 N in air. It weighs 12 N when immersed in water and 13 N when immersed in another liquid. What is the specific gravity of the liquid?

1 / 3
2 / 3
12 / 13
13 / 15

The correct answer is: 2 / 3

$table attributes columnalign left end attributes row cell sigma over rho subscript w equals fraction numerator 15 over denominator 15 minus 12 end fraction comma sigma over rho subscript l equals fraction numerator 15 over denominator 15 minus 13 end fraction end cell row cell rightwards double arrow rho subscript l over rho subscript v equals 2 over 3 end cell end table$

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