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Practice Online Test Series for JEE Main 2018 & NEET 2018
The pressure temperature (P-T) phase diagram show in fig corresponds to the
For a monoatomic gas, the work done at constant pressure is W. The heat supplied at constant volume for the same rise in temperature of the gas is:
Consider two process A and B on a system as Shown in the figure. Let `triangleW_1 and triangleW_2` be the work done by the system in the process A and B respectively then:
For a gas undergoing an adiabatic process, the relation between temperature and volume is found to be `TV^0.4`=const. This gas must be:
A monoatomic ideal gas expands isobarically. The percentage of heat supplied that increase internal energy and that involved in doing work for expansion is (respectively)
A body is executing simple harmonic motion with an angular frequency 2 rad/s. The velocity of the body at 20 mm displacement, when the amplitude of motion is 60 mm is:
An ideal gas is heated from `20^o C to 40^oC` under constant pressure. The change in internal energy is
A particle of mass 10 grams is executing simple harmonic motion with an amplitude of 0.5m and periodic time of `(pi/5)` seconds. The maximum value of the force acting on the particle is:
The coefficient of linear expansion of metal body in one direction is `alpha_1` and that in every direction perpendicular to it `alpha_2`. The coefficient of cubical expansion is:
Which one of the following statement is true for the speed (v) and the acceleration (a) of a particle executing simple harmonic motion:
Certain perfect gas is found to obey `PV^(3/2)`= constant, during adiabatic process. If such a gas at initial temperature T is adiabatically compressed to half the initial volume, its final temperature will be:
The total energy of the body executing SHM is E. Then the kinetic energy when the displacement is half of the amplitude, is:-
5 gm of ice at `0^0` C is dropped in a baeker containing 20 gm of water at `40^o` C. The final temperature will be:
A simple pendulum is made of a body which is a hollow sphere containing mercury suspended by means of a wire. If a little mercury is drained off, the period of pendulum will:
An ideal gas A and a real gas B have their volumes increase from V to 2V under isothrmal conditions. The increase in internal energy:
On a smooth inclined plane, a body of mass M is attached between two springs. The other ends of the springs are fixed to firm support. If each springs has force constant K, the period of oscillation of the body (assuming the springs as massless) is:
In a particular experiment an ideal gas undergoes adiabatic expansion satisfying the equation `VT^3=` constant. The ratio of specific heats `gamma` is:
Ultrasonic, Infrasonic and audible waves travel through a medium with speeds `V_u, V_i` and `V_a` respectively, then:
If the degress of freedom of a gas are f, then `(C_p-C_v)/C_v` will be equal to:
If `V_m` is the velocity of sound in moist air, `V_d` is the velocity of sound in dry air, under identical conditions of pressure and temperature:
