Related InterviewSolutions

• Starting with the same initial conditions, an ideal gas expands from volume `V_1` to `V_2` in three different ways, the work done by the gas is `W_1` if the process is purely isothermal, `W_2` if purely isobaric and `W_3` if purely adiabatic, thenA. `W_2gtW_1gtW_3`B. `W_2gtW_3gtW_1`C. `W_1gtW_2gtW_3`D. `W_1gtW_3gtW_2`
• 5.6 liter of helium gas at STP is adiabatically compressed to 0.7 liter. Taking the initial temperature to be `T_1,` the work done in the process isA. `9/8RT_1`B. `3/2RT_1`C. `15/8RT_1`D. `9/2RT_1`
• Calorie is defined as the amount of heat required to raise temperature of 1 g of water by `1^@C` and it is defined under which of the following conditions?A. From `14.5^@C` to `15.5^@C` at 760 mm of HgB. From `98.5^@C` to `99.5^@C` at 760 mm of HgC. From `13.5^@C` to `14.5^@C` at 76 mm of HgD. From `3.5^@C` to `4.5^@C` at 76 mm of Hg
• In which of the following process, convection does not take place primarilyA. sea and land breezeB. boiling of waterC. heating air around a furnaceD. warning of glass of bulb due to filament
• Earth receives `1400 W//m^2` of solar power. If all the solar energy falling on a lens of area `0.2m^2` is focused on to a block of ice of mass 280 grams, the time taken to melt the ice will be….. Minutes. (`Latent heat of fusion of ice`=`3.3xx10^5J//kg`.)
• The figure below shows the variation of specific heat capacity (C) of a solid as a function of temperature (T). The temperature is increased continuously form 0 to 500K at a constant rate. Ignoring any volume change, the following statement (s) is (are) correct to a reasonable approximation. A. the rate at which heat is absorbed in the range 0-100K varies linearly with temperature T.B. heat absorbed in increasing the temperature from 0-100K is less than the heat required for increasing the temperature from 400-500K.C. there is no change in the rate of heat absorption in range 400-500K.D. the rate of heat absorption increases in the range 200-300K.
• During an experiment, an ideal gas is found to obey an additional law `VP^2=constant,` The gas is initially at a temperature T, and volume V. When it expands to a volume `2V,` the temperature becomes…….
• Two non-reactive monoatomic ideal gases have their atomic masses in the ratio `2:3.` The ratio of their partial pressures, when enclosed in a vessel kept at a constant temperature, is `4:3.` The ratio of their densities isA. `1:4`B. `1:2`C. `6:9`D. `8:9`
• An ideal gas is taken through the cycle `AtoBtoCtoA,` as shown in the figure, If the net heat supplied to the gas in the cycle is 5J, the work done by the gas in the process CtoA is A. `-5J`B. `-10J`C. `-15J`D. `-20J`
• An ideal monoatomic gas is taken round the cycle ABCDA as shown in the P-V diagram. The work done during the cycle is A. `PV`B. `2PV`C. `1//2`D. zero