Download App

Fluid Mechanics — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsFluid Mechanics1 Mark
Question
The pressure in a liquid at two points in the same horizontal plane are equal. Consider an elevator accelerating upward and a car accelerating on a horizontal road. The above statement is correct in:
  1. The car only.
  2. The elevator only.
  3. Both of them.
  4. Neither of them.
✓

Answer

  1. The elevator only.

Explanation:

The two points in the same horizontal line will not have equal pressure if the liquid is accelerated horizontally. There should be vertical acceleration.

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 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

When two bodies stick together after collision, the collision is said to be
→
Considering the gases to be ideal, the value of $\gamma = \frac{{{C_P}}}{{{C_V}}}$ for a gaseous mixture consisting of $= 3$ moles of carbon dioxide and $2$ moles of oxygen will be $({\gamma _{{O_2}}} = 1.4,\,\,{\gamma _{C{O_2}}} = 1.3)$
→
The center of mass of the cone is located from the base-------
→
A particle moves in a plane along an elliptic path given by $\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$. At point $(0, b)$, the $x$-component of velocity is $u$. The $y$-component of acceleration at this point is
→
On suddenly remove the tensile force on a wire, the temperature of the wire:
→
Two travelling waves of equal amplitudes and equal frequencies move in opposite directions along a string. They interfere to produce a stationary wave whose equation is given by $y=\left(10 \cos \pi x \sin \frac{2 \pi t}{T}\right)\, cm$

The amplitude of the particle at $x =\frac{4}{3} \,cm$ will be........ $cm$.

→
Let I1 and I2 be the moments of inertia of two bodies of identical geometrical shape, the first made of aluminium and the second of iron.
  1. I1 < I2
  2. I1 = I2
  3. I1 < I2
  4. Relation between I1 and I2 depends on the actual shapes of the bodies. 
→
Water falls from a height of $210\,m.$ Assuming whole of energy due to fall is converted into heat the rise in temperature of water would be   .......... $^oC$  $(J = 4.3 \,Joule/cal)$
→
The value of $\eta$ may lie between
→
A spring is stretched by applying a load to its free end. The strain produced in the spring is
  1. Volumetric.
  2. Shear.
  3. Longitudinal and shear.
  4. Longitudinal.
→