Physics
Fluid-Mechanics
Easy

Question

A body weights 150 kg in air, 120 g in water and 130 g in a liquid. The density of liquid in g c m to the power of negative 3 end exponent is

  1. 2 over 3
  2. 4 over 5
  3. 13 over 15
  4. 15 over 13

The correct answer is: 2 over 3


    Specific gravity of body equals 150 over 30 equals 5
    Volume of body equals 150 over 5 equals 30 c m cubed
    table attributes columnalign left end attributes row cell text  Now,  end text left parenthesis 150 minus 130 right parenthesis g equals 30 cross times rho subscript 1 cross times g end cell row cell rightwards double arrow    rho subscript l equals 20 over 30 equals 2 over 3 end cell end table

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