Download App

12 . kinetic theory of gases — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics12 . kinetic theory of gases1 Mark
MCQ
For three low density gases $A, B, C$ pressure versus temperature graphs are plotted while keeping them at constant volume, as shown in the figure.

The temperature corresponding to the point ' $K$ ' is $...........\,{}^{\circ}\,C$

  • ✓
    $-273$
  • B
    $-100$
  • C
    $-373$
  • D
    $-40$
✓

Answer

Correct option: A.
$-273$
a
For isochoric process

$\frac{ P }{ T }= n \frac{ R }{ V }= constan t$

$P =\frac{ nR }{ V }( t +273)$

If $P =0 \Rightarrow t =-273^{\circ}\,C$

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 12 . kinetic theory of gases→12 . kinetic theory of gases — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

If an object is projected vertically upwards with speed, half the escape speed of earth, then the maximum height attained by it is [ $R$ is radius of earth]
→
A balloon contains $1500 \,m^3$ of helium at $27^\circ C$ and $4$ atmospheric pressure. The value of helium at $ - \,3^\circ C$ temperature and $2$ atmospheric pressure will be ...... $m^3$
→
Match the temperature of a black body given in List-$I$ with an appropriate statement in List-$II$, and choose the correct option.

[Given: Wien's constant as $2.9 \times 10^{-3} \mathrm{~m}-\mathrm{K}$ and $\frac{\mathrm{hc}}{\mathrm{e}}=1.24 \times 10^{-6} \mathrm{~V}-\mathrm{m}$ ]

List-$I$ List-$II$
($P$) $2000 \mathrm{~K}$ ($1$) The radiation at peak wavelength can lead to emission of photoelectrons from a metal of work function $4 \mathrm{eV}$
($Q$) $3000 \mathrm{~K}$ ($2$) The radiation at peak wavelength is visible to human eye.
($R$) $5000 \mathrm{~K}$ ($3$) The radiation at peak emission wavelength will result in the widest central maximum of a single slit diffraction.
($S$) $10000 \mathrm{~K}$ ($4$) The power emitted per unit area is $1 / 16$ of that emitted by a blackbody at temperature $6000 \mathrm{~K}$.
  ($5$) The radiation at peak emission wavelength can be used to image human bones.
→
A particle starts from rest. Its acceleration $(a)$ versus time $(t)$ is as shown in the figure. The maximum speed of the particle will be.....$m/s$
→
A source of sound emitting a note of frequency $200 Hz$ moves towards an observer with a velocity $v$ equal to the velocity of sound. If the observer also moves away from the source with the same velocity $v$, the apparent frequency heard by the observer is .... $Hz$
→
If the time of flight of a bullet over a horizontal range $R$ is $T\, seconds$, the inclination of the direction of projection to the horizontal is
→
A heavy box of $40\, kg$ is pushed along $20\, m$ by two coolies over a railway platform  whose coefficient of friction with the box is $0.4.$ The work done by two coolies is :- .................. $\mathrm{J}$
→
A simple pendulum of length $1\, m$ is oscillating with an angular frequency $10\, rad/s$. The support of the pendulum starts oscillating up and down with a small angular frequency of $1\, rad/s$ and an amplitude of $10^{-2}\, m$. The relative change in the angular frequency of the pendulum is best given by
→
If vm is the velocity of sound in moist air, vd is the velocity of sound in dry air, under identical conditions of pressure and temperature
→
Equal volumes of two immiscible liquids of densities $\rho$ and $2\rho$ are filled in a vessel as shown in figure. Two small holes are punched at depth $h/ 2$ and $3h/2$ from the surface of lighter liquid. If $v_1 $ and $v_2 $ are the velocities of a flux at these two holes, then $v_1/v_2 $ is : 
→