Recent questions in Class11

Neon gas has undertaken a process in which the pressure and the volume are changed according to the equation $P=kV^k$. The molar hear capacity of the gas for the process is given by?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

Helium gas has undertaken a process in which the pressure and the volume are changed according to the equation $P=kV^2$. If $C_v$ is the molar specific heat at constant volume, then the molar hear capacity of the gas for the process is given by?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

If $2$ moles of an ideal monoatomic gas at tempterature $5T_0$ is mixed with $3$ moles of another ideal monoatomic gas at temperature $3T_0$, what will be the temperature of the mixture?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

If $1$ mole of an ideal monoatomic gas is mixed with 2 moles of an ideal diatomic gas, what is the temperature of the given mixture, given that the monoatomic gas is at temperature $T_0$ and diatomic gas is at temperature $2T_0$?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

A student conducted an experiment and found that an ideal gas obeys the condition $\large\frac{p^2}{\rho} = $ constant. Initially the gas is at a temperature $T$, pressure $p$ and density $\rho$. The gas expands such that the density changes to $\rho/2$, which of the following is true?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

The pressure versus volume graph for an ideal gas of equal number of moles at different temperature are plotted as shown in the figure. Choose the correct alternative:

asked Jan 22, 2014 by balaji.thirumalai

1 answer

A pressure-temperature graph of an ideal gas is shown below. Choose the correct alternative (assume equal number of moles of different volumes).

asked Jan 22, 2014 by balaji.thirumalai

1 answer

In the cylinder shown below the two pistons are connected by a string. Assume that the piston can move freely, what happens when the gas trapped between the pistons are heated?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

Three different gases, one monoatomic, one diatomic and one triatomic are expanded adiabatically under similar conditions, i.e., their final and initial conditions are the same. The least amount of work is done in the case of which gas?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

The below graph shows the behaviour of 3 gases undergoing adiabatic expansion. Which of the following can be true?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

A closed vessel moving with a velocity $v$ (with zero acceleration) is stopped suddenly. If the vessel contains a gas of molecular mass $M$, what will the rise in temperature of the gas be?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

One mole of a monoatomic ideal gas is mixed with two moles of a diatomic gas. What is the molar specific heat of the mixture at constant volume?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

If under standard conditions a gas of density $1.2 kg/m^3$ has sound propagating in it with velocity of $340 m/s$, what is its atomicity/

asked Jan 22, 2014 by balaji.thirumalai

1 answer

An air bubble is at the bottom of the lake at $40m$ deep where the temperature is $6^{\circ}C$. The bubble rises to the surface where the temperature is $20^{\circ}C$ If it's volume at the bottom is $50\;cm^3$, what is its volume at the surface?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

An air bubble is at the bottom of the lake at $40\;m$ deep where the temperature is $0^{\circ}C$. The bubble rises to the surface where the temperature is $20^{\circ}C$ If it's volume at the bottom is $50\;cm^3$, what is its volume at the surface?

asked Jan 22, 2014 by balaji.thirumalai

1 answer

When a damped spring mass system is forced into oscillations at different frequencies it resonates (amplitude increases and peaks when compared to input amplitude) at its damped natural frequency. For such systems the resonance of acceleration is more when

asked Dec 10, 2013 by meena.p

1 answer

The phase constant in rad of a simple pendulum whose amplitude of oscillation is 2; initial displacement is 1, initial velocity is 4 units/sec, frequency in rad/sec is 6 is:

asked Dec 10, 2013 by meena.p

1 answer

The phase constant in radians of a simple pendulum having an initial displacement of 24 units and having an amplitude of .24 is

asked Dec 10, 2013 by meena.p

1 answer

The product of time period in seconds and frequency of oscillation in rad/sec of a simple pendulum of length $l$ suspended inside a rocket moving vertically with an acceleration 'a' just above the earth is:

asked Dec 10, 2013 by meena.p

1 answer

A simple pendulum is suspended inside a truck moving uniformly with a small acceleration of '3b'. Its mean position as an angle in radians with respect to the vertical is

asked Dec 10, 2013 by meena.p

1 answer

If the velocity of a spring mass system which starts from zero is given by $6 \sin(4t)$ then its amplitude of displacement and accelerations are

asked Dec 10, 2013 by meena.p

1 answer

If the acceleration of the mass of a spring mass system is equal to $2 \sin 5t,$ the resulting motion is

asked Dec 10, 2013 by meena.p

1 answer

The damped natural frequency is higher than natural frequency is a

asked Dec 9, 2013 by meena.p

1 answer

When four similar springs are connected in series to four non identical masses with three of the masses in between the three springs and the other at the end:

asked Dec 9, 2013 by meena.p

1 answer

When three springs are used to suspend a mass what happens to the natural frequency when compared to when each of the spring is used to suspend the same mass:

asked Dec 9, 2013 by meena.p

1 answer

A body has the following combinations of acceleration, position, velocity at one instant while the fourth parameter is its initial position. Which of the following combinations describes $SHM$:

asked Dec 9, 2013 by meena.p

1 answer

How many minimum observations of the acceleration (at various time instants) are required to quantify a simple harmonic motion (form the exact equation describing the displacement as a function of time):

asked Dec 9, 2013 by meena.p

1 answer

The motion of the sea waves when wind is blowing uniformly can be considered as:

asked Dec 9, 2013 by meena.p

1 answer

The mean position and one extreme position of the two different waves represented by $x=23 \sin(2t)$ and $x=5+23 \sin(2t)$ respectively are:

asked Dec 9, 2013 by meena.p

1 answer

The motion of an electric train throughout the day is a:

asked Dec 9, 2013 by meena.p

1 answer

When a damped spring mass system is forced into oscillations at different frequencies it resonates (amplitude increases and peaks when compared to input amplitude) at its damped natural frequency. For such systems the resonance of velocity is more when

asked Dec 9, 2013 by meena.p

1 answer

The phase constant in rad/sec of a simple pendulum whose amplitude of oscillation is 'b', initial displacement is 'y', initial velocity is 'v', frequency in rad/sec is 'w' is

asked Dec 9, 2013 by meena.p

1 answer

The phase constant in radians of a simple pendulum having an initial displacement of 4 units and having an amplitude of 3 is

asked Dec 9, 2013 by meena.p

1 answer

The time period of oscillation in sec of a simple pendulum of length l suspended inside a rocket moving vertically with an acceleration '2a' just above the earth is:

asked Dec 9, 2013 by meena.p

1 answer

A simple pendulum is suspended inside a truck moving uniformly with a small acceleration of $‘2a’.$ Its mean position as an angle in radians with respect to the vertical is

asked Dec 9, 2013 by meena.p

1 answer

If the velocity of a spring mass system which starts from zero is given by $7 \sin(4t)$ then its amplitude of displacement and accelerations are

asked Dec 9, 2013 by meena.p

1 answer

If the acceleration of the mass of a spring mass system is equal to $5 \sin 4t,$ the resulting motion is

asked Dec 9, 2013 by meena.p

1 answer

The damping in a system

asked Dec 9, 2013 by meena.p

1 answer

When three similar springs are connected in series to three non identical masses with two of the masses in between the springs and the other at the end:

asked Dec 9, 2013 by meena.p

1 answer

When four springs are used to suspend a mass what happens to the natural frequency when compared to when each of the spring is used to suspend the same mass:

asked Dec 9, 2013 by meena.p

1 answer

A body starting from rest has the following combinations of acceleration, position, velocity and at one instant while its initial displacement is given as the fourth variable. Which of the following combinations describes $SHM$:

asked Dec 9, 2013 by meena.p

1 answer

How many minimum observations of the velocity (at various time instants) are required to be made to quantify a simple harmonic motion (to form the exact equation describing the displacement as a function of time):

asked Dec 9, 2013 by meena.p

1 answer

The motion of an object is given by $x=23 \sin^2(2-3t).$ This is a

asked Dec 9, 2013 by meena.p

1 answer

The mean position and one extreme position of the two different waves represented by $x=10-20 \sin(8t)$ and $x=12+21sin(3t)$ respectively are:

asked Dec 9, 2013 by meena.p

1 answer

The mean position and one extreme position of the two different waves represented by $x=35 \sin(5t)$ and $x=8+23 \sin(8t)$ respectively are:

asked Dec 9, 2013 by meena.p

1 answer

The motion of stars is a

asked Dec 9, 2013 by meena.p

1 answer

When a damped spring mass system is forced into oscillations at different frequencies it resonates (amplitude increases and peaks when compared to input amplitude) at its damped natural frequency. For such systems for the same input amplitude, the resonance is more when

asked Dec 9, 2013 by meena.p

1 answer

The phase constant, in rad/sec, of a simple pendulum - whose amplitude of oscillation is 'a' initial displacement is 'x', initial velocity is 'v', frequency in rad/sec is 'w' - is equal to:

asked Dec 9, 2013 by meena.p

1 answer

The phase constant in radians of a simple pendulum having an initial displacement of $3.9$ units and having an amplitude of $5.2$ is

asked Dec 9, 2013 by meena.p

1 answer

The frequency of oscillation in rad/sec of a simple pendulum of length l suspended inside a rocket moving vertically with an acceleration 'a' just above the earth is:

asked Dec 9, 2013 by meena.p

1 answer

Ask Questions, Get Answers