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Recent questions in Class11

Questions >> JEEMAIN and NEET >> Physics >> Class11

Class11

Units and Measurement

Motion in a Straight Line

Motion in a Plane

Work, Power and Energy

System of Particles and Rotational Motion

Mechanical Properties of Solids

Mechanical Properties of Fluids

Thermal Properties of Matter

Kinetic Theory of Gases

Which of the following graphs will be linear with zero slope in case of an ideal gas?

asked Jan 31, 2014 by balaji

1 answer

Two diatomic gases have denisities d1 and d2 under similar conditions. The ratio of the root mean square velocities is?

asked Jan 31, 2014 by balaji

1 answer

A container contains an ideal gas. The wall is hit by "n" molecules / second, each of mass "m" and moving the same velocity "u". The force exerted by the molecules on the wall is?

asked Jan 31, 2014 by balaji

1 answer

An ideal gas kept in vessel has rms spped of 200 m/s. If 10% of the gas leaks out of the vessel, then the rms speed of the remaining molecules is?

asked Jan 31, 2014 by balaji

1 answer

A liquid is boiled and its temperature (T) versus Heat supplied (Q) graph is plotted. Which of the following is the correct graph?

asked Jan 31, 2014 by balaji

1 answer

If for an ideal gas, $\large\frac{R}{C_v} $$= 0.29$, it's shape is?

asked Jan 31, 2014 by balaji

1 answer

Which of the following quantities cannot be zero on an average for the molecules of an ideal gas in equilibrium condition?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

Which of the following relations hold true for a monatomic gas?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

The specific heat of a gas:

asked Jan 28, 2014 by balaji.thirumalai

1 answer

Keeping the volume constant and increasing the temperature, which of the following will hold true?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

The average translational kinetic enegry of Oxygen molecules (molecular weight of $O_2$ is 32) at a particlular temperature is 0.032eV. What is the average translational kinetic energy of $N_2$ molecules (molecular weight is 28) at the same temperature

asked Jan 28, 2014 by balaji.thirumalai

1 answer

A vessel is filled with an ideal gas at 76 cm of Hg (mercury). The mass of gas is increased by 25% by introducing more gas at the same temperature. What is the resultant pressure of Hg in cm?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

The energy density of an ideal monoatomic gas is equal to:

asked Jan 28, 2014 by balaji.thirumalai

1 answer

The $x$-components of velocity of some particles (in $km/s$) are $6,4,2,0,-2,-4,-6$. The root-mean-square (rms) velocity calculated from these data (in $km/s$) is nearest to?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

A given sample of ideal gas is made to undergo a process in which the temperature decreases by 10% and the pressure decreases by 8%. By what % does the volume change?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

By what percentage should the volume be decreased to increase the pressure by 10% at constant temperature?

asked Jan 24, 2014 by balaji.thirumalai

1 answer

If the speed of sound in Hydrogen at NTP is equal to the speed of sound in carbon-di-oxide at $T_0$, what is the value of $T_0$? (i.e, $T = 273K$)

asked Jan 24, 2014 by balaji.thirumalai

1 answer

Sound travels with a speed $v$ in hydrogen gas at NTP. At what temperatures does carbon-di-oxide have a rms (root mean square) velocity of $2v$ (Note: $T_0 = 273K$ and $\gamma$ for $H_2 = \large\frac{7}{5}$)

asked Jan 24, 2014 by balaji.thirumalai

1 answer

The temperature at which the most probably speed of oxygen is equal to the rms velocity of hydrogen at NTP is?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

The temperature at which the velocity of Helium is four times the velocity of Hydrogen at NTP is?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. The molar mass of the gas is M. Which of the following cannot be an expression for density of an ideal gas?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. The molar mass of the gas is M. Then the temperature at which the sample of gas will weight m is given by which of the following options?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

An ideal gas occupies a volume V at temperature T and pressure P. The mass of each molecule is m. Then the number of molecules in the sample is?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

For an ideal gas, average kinetic energy per degree of freedom is?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

A bubble of an ideal gas is trapped in a liquid filled in a container. As the bubble moves upwards besides the buoyancy force, the forces acting on it are:

asked Jan 23, 2014 by balaji.thirumalai

1 answer

Which of the following quantities is larger for a diatomic has than that of a monoatomic gas?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

Given the following statements, choose the correct answer:

asked Jan 23, 2014 by balaji.thirumalai

1 answer

Which of the following statements is true about an ideal gas?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

Which of the following statements is true about an ideal gas?

asked Jan 23, 2014 by balaji.thirumalai

0 answers

A gas is found to obey the law $P =kV^{-2}$. The initial volume is $V_0$. If the gas expands to $4 V_0$ and if the initial temperature is $T_0$ what is its final temperature?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

A gas is found to obey the law $P =kV^a$. The initial temperature and volume are $V_0$. If the gas expands to $b V_0$ the sign of the internal energy change depends on which of the following? (Note: $\gamma$ is the adiabatic index)

asked Jan 23, 2014 by balaji.thirumalai

1 answer

A gas is found to obey the law $P^3V =$ constant. The initial temperature and volume are $T_0$ and $V_0$. If the gas expands to $2 V_0$ what happens to the internal energy?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

In a thermodynamic process, neon obeys the law $TP^{\large\frac{2}{5}}$ = constant. If the temperature of 2 moles of gas is raised from T to 5T, then the heat given to gas (consider ideal behaviour) is what?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

In a thermodynamic process, an ideal monoatomic gas follows the law $TP^{\large\frac{3}{5}} = $ constant. If temperature of 2 moles of gas is raised from T to 4 T, then what is the heat given to the gas?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

If a gas is made to expand in such a way that pressure increases and its final and initial volumes are equal then which of the following statements must be true?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

If a gas is made to expand in such a way that its final and initial pressure are equal then which of the following statements cannot be true?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

A gas is made to expand in such a way that its final and initial temperatures are equal and also the process followed by the gas traces a straight line of the PV diagram. Then, which of the following statements is true?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

The temperature versus volume of an ideal gas is shown below.

asked Jan 22, 2014 by balaji.thirumalai

1 answer

Pressure versus Temperature graph of an ideal gas is shown below. Then which of the options that follow forms the corresponding P-V Diagram?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

A 150m long train is moving with uniform velocity of 45km / h. The time taken by train to cross the bridge of length 850m is ?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

Which of the following quantities depend on temperatures only for a given ideal gas?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

Which of the following quantities depend on temperatures only for a given ideal gas?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

The molar heat capacity for an ideal gas is?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

Which of the following statements is false about the molar heat capacity of the ideal gas?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

Which of the following quantities is independent of the nature of gas at the same temperature?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

The quantity $\large\frac {mRT^2}{\rho}$ of an ideal gas is proportional to the:

asked Jan 22, 2014 by balaji.thirumalai

2 answers

Internal energy of a system remains constant when it undergoes?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

A gas with $\large\frac {C_p}{C_v} = \gamma$ goes from an initial state of $(P_1,V_1,T_1)$ to a final state of $(P_2,V_2,T_2)$ through an adiabatic process. The work done by the gas is?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

In a given process, $\large\frac{1}{k}$th part of the supplied heat goes in raising internal energy of the gas. Finding the molar specific heat of the gas and the process gives?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

In a given gas sample of Hydrogen, one fifth of the heat supplied is used to raise the internal energy of the gas. Finding the molar specific heat of the gas gives?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

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