Kinetic Theory's Question 1 | Physics XI - Part 2 | NCERT Exemplar Questions

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MCQ (Single Correct Answer)

A cubic vessel (with face horizontal + vertical) contains an ideal gas at NTP. The vessel is being carried by a rocket which is moving at a speed of $500 \mathrm{~m} \mathrm{~s}^{-1}$ in vertical direction. The pressure of the gas inside the vessel as observed by us on the ground

remains the same because $500 \mathrm{~ms}^{-1}$ is very much smaller than $v_{\mathrm{rms}}$ of the gas

remains the same because motion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls

will increase by a factor equal to $\left(v_{\mathrm{ms}}^2+(500)^2\right) / v_{\mathrm{ms}}^2$ where $v_{\mathrm{ms}}$ was the original mean square velocity of the gas

will be different on the top wall and bottom wall of the vessel

MCQ (Single Correct Answer)

1 mole of an ideal gas is contained in a cubical volume $V, A B C D E F G H$ at 300 K (figure). One face of the cube ( $E F G H$ ) is made up of a material which totally absorbs any gas molecule incident on it. At any given time,

the pressure on $E F G H$ would be zero

the pressure on all the faces will the equal

the pressure of $E F G H$ would be double the pressure on $A B C D$

the pressure on $E F G H$ would be half that on $A B C D$

MCQ (Single Correct Answer)

Boyle's law is applicable for an

adiabatic process

isothermal process

isobaric process

isochoric process

MCQ (Single Correct Answer)

A cylinder containing an ideal gas is in vertical position and has a piston of mass $M$ that is able to move up or down without friction (figure). If the temperature is increased

both $p$ and $V$ of the gas will change

only $p$ will increase according to Charles' law

$V$ will change but not $p$

$p$ will change but not $V$

MCQ (Single Correct Answer)

Volume versus temperature graphs for a given mass of an ideal gas are shown in figure. At two different values of constant pressure. What can be inferred about relation between $p_1$ and $p_2$ ?

$p_1>p_2$

$p_1=p_2$

$p_1< p_2$

Data is insufficient