Recently Active Disucss Test Question Questions

Starting with the same initial conditions, an ideal gas expands from volume V1 to V2 in three different ways. The work done by the gas is W1 if the process is purely isothermal, W2 if purely isobaric and W3 if purely adiabati ...

An ideal diatomic gas is enclosed in an insulated chamber at temperature 300 K. The chamber is closed by a freely movable massless piston, whose initial height from the base is 1m. The gas is heated such that its temperature ...

An ideal gas having initial pressures P, volume V and temperature T is allowed to expand adiabatically until its volume becomes 5.66 V while its temperature falls to T/2. The work done by the gas during the expansion is ...

A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is ...

If one mole of a monoatomic gas is mixed with one mole of a diatomic gas, the value of γ for the mixture is ...

An ideal gas has Cp=5R/2. The gas is kept in a closed vessel of volume 0.0083 m3, at a temperature of 300 K and a pressure 1.6×106 N/m2. An amount of 2.49×104 joule of heat energy is applied to the gas. The final temper ...

A given quantity of an ideal gas at pressure P and absolute temperature T. The isothermal bulk modulus of the gas is ...

During an experiment, an ideal gas is found to obey an additional law VP2=constant. The gas is initially at a temperature T, and volume V. When it expands to a volume 2V, the temperature becomes ...

Two glass bulbs of equal volume are connected by a narrow tube and are filled with a gas at 0°C and a pressure of 76 cm of mercury. One of the bulbs is then placed in melting ice and the other is placed in a water bath maint ...

A thin tube of uniform cross section is sealed at both ends. It lies horizontally, the middle 5 cm containing mercury and the two equal ends containing air at the same pressure "P". When tube is held at an angle 60° ...

A closed container of volume 0.02 m3 contains a mixture of neon and argon gas, at a temperature of 27°C and pressure of 1×105 N/m2. The total mass of the mixture is 28 gm. If the gram molecular weights of neon and argon are ...

A jar contains a gas and a few drops of water at T K. The pressure in the jar is 830 mm of Hg. The temperature of the jar is reduced by 1%. The saturated vapour pressure of water at the two temperatures are 30 and 25 mm of Hg ...

In the previous question what will be the temperature when all three are mixed? ...

The temperature of equal masses of three different liquids A, B and C are 12°C, 20°C and 36°C respectively. The temperature when A and B are mixed is 17°C and when B and C are mixed it is 26°C. What should be the tempera ...

Earth receives 1400 W/m2 of solar power. If all the solar energy falling on a lens of area 0.2 m2 is focussed onto a block of ice of mass 280 grams, the time taken to melt the ice will be (latent heat of fusion of ice=3.3 ...

2 kg of ice at -20°C is mixed with 5 kg of water at 20°C. The water content of the final mixture is (Lf=80 kcal/kg, sw=1 kcal/kg/°C, si=0.5 kcal/kg/°C) ...

Two rods of different materials of coefficients of thermal expansion α, 2α respectively; Young's modulus Y and 2Y respectively; of equal initial length l of equal cross-sectional areas are joined together and the free e ...

The apparatus shown in figure consists of four glass columns connected by horizontal sections. The height of two central columns B and C are 49 cm each. The two outer columns A and D are open to the atmosphere. A and C are ma ...

Two rods of different materials having coefficients of thermal expansion α1, α2 and Young's modulus Y1, Y2 respectively are fixed between two rigid massive walls. The rods are heated such that they undergo the same incr ...

An aluminium rod (length l1; coefficient of linear expansion αa) and a steel rod (length l2; coefficient of linear expansion αs) are joined to such that the total length becomes l1+l2. If the increase in lengths of aluminiu ...

In the previous ques find the height at which hole should be punched so that the liquid travels the maximum distance initially. ...

A container of large uniform cross-sectional area A resting on a horizontal surface, holds two immiscible, non-viscous and incompressible liquids of densities d and 2d, each of height H/2 as shown in figure. The lower density ...

A large open top container of negligible mass and uniform cross sectional area A has a small hole of cross sectional area A/100 in its side wall near the bottom. The container is kept on a smooth horizontal floor and contains ...

d points of intersection of d circle x^2+y^2=a^2 wid d parabola y^2=4ax and y^2=-4ax form a rectangle whoes area is ...

Lenght of d tangent drwn frm and end of d latus rectum of d parabola y^2=4ax to d circle of radius a touchin externally d parabola at d vertex is ...

A non-viscous liquid of constant density 1000 kg/m3 flows in a streamline motion along a tube of variable cross section. The tube is kept inclined in the vertical plane as shown in figure. The area of cross section of the tub ...

PN is an ordinate of d parabola y^2=9x .A straight line is drwn thru d mid point M of PN parallel to d axis of d parabola meetin d parabola at Q .NQ meets d tangent at d vertex A at a point T,then AT/NP = ...

*Image* In the figure above ,AC and BD are two horizontal tubes and two charged particles of charge 10 C and '- 10C' and both having mass 4.5*(10 9) are kept inside the tubes at C and D respectively.The particles are ...

*Image* In the above figure the rod QO has mass m and length L.The system is in equillibrium. Further it is given that √AOC=√COB ,√OCB =90 and QM||AO . Where should a point mass m be placed on the rod so that th ...

A small sphere of definite volume and density - p0 is thrown upwards from the bottom of a lake with speed v. The density of the lake varies with the distance x from the bottom as d=p0(1-(x/H)) where H is the height of the ...