Moderate

If two liquids of same volume but different densities ρ1 and ρ2 are mixed, then density of mixture is given

Correct answer: C. ρ= 2ρ1ρ2/ρ1+ρ2

  • A. ρ= ρ1+ρ2/2
  • B. ρ= ρ1+ρ2/2ρ1ρ2
  • C. ρ= 2ρ1ρ2/ρ1+ρ2
  • D. ρ= ρ1ρ2/ρ1+ρ2

Explanation

If two liquids have equal volumes, then the density of the mixture is simply the harmonic mean of the two densities:𝜌 mix=Total mass/ Total volumeρ mix=Total volume\Total massl

Last updated

About Fluid Dynamics

Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.

Practise Fluid Dynamics

363 free Fluid Dynamics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Physics questions like this

Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions