Download App

Fluid Mechanics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsFluid Mechanics1 Mark
Question
A solid floats in a liquid in a partially dipped position.
  1. The solid exerts a force equal to its weight on the liquid.
  2. The liquid exerts a force of buoyancy on the solid which is equal to the weight of the solid.
  3. The weight of the displaced liquid equals the weight of the solid.
  4. The weight of the dipped part of the solid is equal to the weight of the displaced liquid.
✓

Answer

  1. The solid exerts a force equal to its weight on the liquid.
  2. The liquid exerts a force of buoyancy on the solid which is equal to the weight of the solid.
  3. The weight of the displaced liquid equals the weight of the solid.
Expalnation:
Force exerted by any solid on a liquid = F = mg = W = Weight of the solid.
According to Archimedes' principle, any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the
Object.
Also, any floating object displaces its own weight of fluid. Thus, we can say that the weight of the object is equal to the weight of the fluid displaced.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Fluid Mechanics→Fluid Mechanics — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

If the capacitors having capacitance $C_1$ and $C_2$ are connected in series then their resultant capacitance is given by:
→
An EM wave of intensity I falls on a surface kept in vacuum and exerts radiation pressure p on it. Which of the following are true?
→
The thickness of the depletion region is of the order of ___________ of a micrometre.
→
What was the fissionable material used in bomb dropped at Nagasaki (Japan) in the year 1945 ?(a) Uranium(b) Nepturium(c) Berkalium(d) Plutonium
       
→
A man who cannot see clearly beyond 5 m wants to see stars clearly. He should use a lens of focal length(a) – 100 m(b)  + 5 m(c) – 5 m (d) Very large 
       
→
For substances hysteresis $(B - H)$ curves are given as shown in figure. For making temporary magnet which of the following is best.
→
The electric potential $V$ is given as a function of distance $x ($metre$)$ by $V=\left(5 x^2+10 x-9\right.
)$ volt. Value of electric field at $x=1$ is
→
The lines of force due to earth’s horizontal magnetic field are:
→
If the two ends of a p-n junction are joined by a wire:
  1. There will not be a steady current in the circuit.
  2. There will be a steady current from the n-side to the p-side.
  3. There 'will a steady current from the p-side. to the n-side.
  4. There may or may not be a current depending upon the resistance of the connecting wire.
→
$n$ identical bulbs, each designed to draw a power $p$ from a certain voltage supply, are joined in series across that supply. The total power which they will draw is
→