NEET Physics Mechanical Properties of Fluids Questions Solved


In making an alloy, a substance of specific gravity s1 and mass m1 is mixed with another substance of specific gravity s2 and mass m2 ; then the specific gravity of the alloy is

(a) m1+m2s1+s2                               (b) s1s2m1+m2

(c) m1+m2m1s1+m2s2                            (d) m1s1+m2s2m1+m2

Specific gravity of alloy = Density of alloyDensity of water

=Mass of alloyVolume of alloy×density of water

=m1+m2m1ρ1+m2ρ2×ρw=m1+m2m1ρ1ρw+m2ρ2ρw=m1+m2m1s1+m2s2

[ As specific gravity of substance = density of substancedensity of water]

Difficulty Level:

  • 9%
  • 20%
  • 67%
  • 6%
Crack NEET with Online Course - Free Trial (Offer Valid Till September 21, 2019)