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Three rods made of same material and having the same cross-section have been joined as shown in the figure. Each rod is of same length. The left and right ends are kept at 0°C and 90°C respectively. The temperature of the j ...

A cylinder of radius R made of a material of thermal conductivity K1 is surrounded by a cylindrical shell of inner radius R and outer radius 2R made of a material of thermal conductivity K2. The two ends of the combined syste ...

Two moles of an ideal monoatomic gas, initially at pressure P1 and volume V1 undergo an adiabatic compression until its volume is V2. Then the gas is given heat Q at constant volume V2, total change in internal energy is ...

A monoatomic ideal gas of two moles is taken through a cyclic process for A as shown in figure. The volume ratios are (VB/VA)=2 and (VD/VA)=4. If the temperature TA at A is 27°C, then the total work done by the gas d ...

An ideal gas is taken through the cycle ABCA, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process in the process CA is (the values given are in SI units) *I ...

When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is ...

An ideal gas is taken through a cyclic thermodynamic process through four steps. The amounts of heat involved in these steps are Q1=5960 J, Q2=-5585 J, Q3=-2980 J and Q4 respectively. The corresponding works invol ...

An ideal gas undergoes cyclic process as shown in the given P-T diagram, where AC is adiabatic. The process is also represented by *Image* ...

P-V plots for two gases during adiabatic processes are shown in the figure. Plots 1 and 2 should correspond respectively to *Image* ...

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. ...