Download App

Units and Measurements — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsUnits and Measurements2 Marks
Question
 What is common between bar and torr?
✓

Answer

Both bar and torr are the units of pressure.
1 bar = 1 atmospheric pressure
= 760 mm of Hg column
= 105N/ m2
1 torr = 1 mm of Hg column
$\therefore$ 1 bar = 760 torr

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 "2 Marks Questions" from Units and Measurements→Units and Measurements — all question types→Physics STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

The force on a north pole,$\overrightarrow{\text{F}}=\text{m}\overrightarrow{\text{B}},$ is parallel to the field $\overrightarrow{\text{B}}.$ Does it contradict our earlier knowledge that a magnetic field can exert forces only perpendicular to itself?
→
A swimmer can swim with velocity of 10 km/ h. w.r.t. the water flowing in a river with velocity of 5 km/ h. In what direction should he swim to reach the point on the other bank just opposite to his starting point?
→
A farsighted person cannot see objects placed closer to 50cm. Find the power of the lens needed to see the objects at 20cm.
→
An object moving on a straight line covers first half of the distance at speed v and second half of the distance at speed 2v. Find:
  1. Aaverage speed.
  2. Mean speed.
→
In a car lift compressed air exerts a force $F$ on a small piston having a radius of $5.0 cm$. This pressure is transmitted to a second piston of radius $15 cm$ (Fig 9.7). If the mass of the car to be lifted is $1350 kg$, calculate $F_1$. What is the pressure necessary to accomplish this task? $\left(g=9.8 ms ^2\right)$
→
At  t = 0, a particle is at rest at origin. Its acceleration is 2m/s2 for the first 3s and -2m/s2 for next 3s. Plot the acceleration versus time and velocity versus time graph.
→
The bob of a simple pendulum is hollow and has been filled with water. There is a small hole below it. If this sphere continuously performs simple harmonic motion and water keeps falling out of the hole, then how will the period of oscillations change?
→
Differentiate between forced oscillations and supported oscillations.
→
If the required pressure in the tyre of a car is 199k Pa, then
  1. What is the gauge pressure?
  2. What is the absolute pressure?
→
The time of oscillation (t) of a small drop of liquid under surface tension depends upon the density $\rho,$ radius r and surface tension $\sigma.$
Prove dimensionally that to:
$\text{t}\propto\sqrt{\frac{\rho\text{r}^3}{\sigma}}.$
→