Physics question and answers for February 23, 2024
- Q 14 In thermodynamic processes correct match of column I with column ll is Column l Type of process a Isothermal b Isobaric c Isochoric NCERT Pg 306 Column II Feature...
- Q of the following is incorrect NCERT Pg 315 statement 1 Free expansion of a gas is irreversible process 2 A thermodynamic process is reversible if process can be turned back...
- Q 3 A reversible cyclic heat engine absorbs 900 joule of heat from source If 400 J of heat is released to the sink what is the efficiency o the engine...
- Q 10P N m 1 5J 2 10J 3 15J 4 20 J Heat energy absorbed by a system in going 19 fengur through a cyclic process shown in figure is...
- Q A thermometer is moved from a room where the temperature is 81 F to a freezer where the temperature is 15 F After 30 seconds the thermometer reads 59 F...
- Q The human heart discharges 75 cc of blood through the arteries at each beat against an average pressure of 10 cm of mercury Assuming that the pulse frequency is 72...
- Q Three highly conducting concentric spherical shells acting as black body of radii nr2 and r3 are kept in vacuum The region between the shells is evacuated and they can exchange...
- Q The spectrum of a black body at 7 C is as shown in the figure The area under the curve is A The corresponding area at 133 C will be...
- Q 56 Steam at 100 C is allowed to pass into a vessel containing 10 gm ice and 100 gm of water at 0 C until all the ice is melted...
- Q If pressure P is inversely proportional to volume V then a PV Constant b V x 1 1 a e are correct 2 c d are correct c PV P...
- Q MT 02 erator the ejects Re 15 7 1 1 1 00 work mergy e is 49 A gas is compressed isothermally to half its initial volume The same gas...
- Q Sir please explain the method of solving this question in d tail 14 A gas is taken from state 1 to state 2 along the path shown in V P...
- Q el 11 53 The power radiated by a black body is P and it e radiates maximum energy at wavelength 2 If the temperature of the black body is now...
- Q 113 The following are the P V diagrams for cyclic processes for a gas In which of this process is not heat absorbed by the gas fata V 1 P...
- Q 3 One mole of an ideal gas undergoes a process T 300 2V where 7 is temperature and Vis volume If volume of gas increases from 2 m to 4...
- Q An ideal gas undergoes adiabatic process according to the law TV1 2 constant If the gas is at pressure P and temperature T at a certain instant the value of...
- Q Mete 58 A metallic conductor at 10 C connected in the left gap of meter bridge gives balancing length 40 cm When the conductor is at 60 C the balancing...
- Q Consider t non interacting classical particles are in a system It is one dimension harmonic potential The form of energy of the system is V x ox o is constant...
- Q A closed rigid tank filled with water vapor initially at 20 MPa 520 C is cooled until its temperature reaches 400 C Using the compressibility chart determine a the specific...
- Q n testprep answer key user test id 842749 Three Carnot engines operate in series between a heat source at a temperature f and a heat sink at temperature T see...
- Q The efficiency of the reversible heat engine is 11 and that of irreversible heat engine is n Which of the following is correct 1 1 and n 1 3 n...
- Q One mole of a monoatomic ideal gas undergoes a cyclic process as shown in the figure where V is the volume and T is the temperature Which of the statements...
- Q A steel rod and a brass rod differ by 12cm in length at all temperatures Coefficient of steel and brass are 12x106C and 18x10 6 Crespectively The length of brass...
- Q 3 The molar specific heat capacity of an ideal mono atomic gas during a process represented by equation P T constant is 2 2 5 R 1 3 R 3...
- Q A diatomic gas shown on temperature volume T V diagram as shown Hence TA C V 1 Pressure during ab decreases 2 Pressure during ab increases 3 Temperature increases during...
- Q 1 An ideal gas is taken through the cycle A B C A as shown in the figure If the net heat suppliec to the gas in the cycle is...
- Q Two identical finite bodies of constant volume and of constant heat capacity at consta volume Cr are used to drive a heat engine Their initial temperatures are T and T...
- Q 2 A gas is found to obey the law P V Constant Th initial temperature and volume are T and V If th gas expands to a volume 2V its...
- Q Online Mock Test Series for NEET 2020 19 A capacitor of capacitance 1 F is charged to 30 V and the battery is then disconnected If it is connected across...
- Q One mole of He gas undergoes a cyclic process as shown in the graph The part of the graph which shows absorption of heat from the surrounding is PA B...
- Q A carnot engine having an efficiency of 10 is being used as a refrigerator If the work done on the refrigerator is 10 J the amount of heat absorbed from...
- Q given figure rige in internal energy in processes A and respectively then P B 2 Q A 1 V Medic 1 AU1 AU2 0 2 Net heat will be rejected...
- Q 146 kJ work is performed in order to compress one kilomole of a gas adiabatically and in this process the temperature of the gas increases by 7 C the gas...
- Q met 23 For a heat engine the temperature of the source is 127 C To have 60 efficiency the temperature of the sink is 1 160 C 3 113 C...
- Q Carbon monoxide is carried around a closed cycle abc in which bc is an isothermal process as shown in the figure The gas absorbs 7000 J of heat as its...
- Q est 1 Code A One mole of an ideal monoatomic gas undergo process ABC as shown in the indicator diagram H supplied to the gas during the process is P...
- Q Q4 On mixing 1 g mole of a monoatomic with 1 g mole of a diatomic gas the specific heat of mixture at constant volume will be a R b...
- Q If the efficiency of a heat engine working between a source and sink is 40 then the coefficient of performance of refrigerator working between the same source and the sink...
- Q Ans 3 4 Two cylinders A and B of equal capacity are connected to each other via a stop cock A contains an ideal gas at standard temperature and pressure...
- Q SolveLancer Test One mole of an ideal gas is taken from A to D as shown in the given figure Calculate the change in internal energy SolveLancer Test a 1152...
- Q 2 If Y K and n are values of Young s modulus bulk modulus and modulus of rigidity of any material respectively Choose the correct relation for these parameters a...
- Q A system is taken from initial state to final state along two paths For path one heat supplied is Q 50 J and W 20 J What is work done...
- Q 10 nmole of a perfect gas undergoes a cyclic process ABCA see figure consisting of the following processes AB Isothermal expansion at temperature T so that the volume is doubled...
- Q The specific heats C and C of a diatomic gas A are 29 J mol K and 22 J mol K respectively Another diatomic gas B has the corresponding values...
- Q Two moles of a monatomic ideal gas is taken through a cyclic process shown on pressure P temperature T diagram in figure Process CA is represented as PT where x...
- Q sli 14 A certain diatomic gas has the same specific heats as an ideal gas but a different equation of state PV R T aT2 a 0 001 K The...
- Q A U tube made of heat insulating material is shown in figure One limb is closed by a non conducting cork the temperature is To 300 K a 10 J...
- Q Thermodynamics processes are indicated in the following diagram 2017 P Match the following Column I Process I C Process I Process III P 9 r 700 K 500 K 300...
- Q A gas is compressed isothermally to half its initial volume The same gas is compressed separately through an adiabatic process until its volume is again reduced to half Then Phase...
- Q Cp and C are specific heats at constant pressure and constant volume respectively It is observed that Cp Cv a for hydrogen gas Cp C b for nitrogen gas The...
- Q A Carnot engine whose sink is at 300 K has an efficiency of 40 By how much should the temperature of source be increased so as to increase its efficiency...
- Q The coefficient of performance of a inside refrigerator is 5 If the temperature freezer is 20 C the temperature of the surroundings to which it rejects heat is A 21...
- Q 10 A Camot engine having an efficiency of as heat engine is used as a refrigerator If the work done on the system is 10 J the amount of energy...
- Q 0 When an ideal gaseous system is taken from state i to state f along path iaf it is found Q 50 cal and w 20 cal Along the path...
- Q A gas is compressed at a constant pressure of 50N m from a volume of 10m to a volume of 4m Energ of 100 then added to the gas by...
- Q 1 A uniform wheel of 800 mm diameter weighing 6kN rest against a rigid rectangular block of 200 mm height Find the least pull through the center of the wheel...
- Q Is this kind of question important for NEET I have never seen such ques in PYQS An ideal diatomic gas undergoes a cyclic process as shown in P V diagram...
- Q A ring shaped tube contains two ideal gases with equal masses and molar masses M 32 and M 28 The gases are separated by one fixed partition and another movable...
- Q An ideal diatomic gas undergoes a cyclic process as shown in P V diagram The dotted curves are isothermal The efficiency of the heat engine based on these processes is...
- Q A fixed amount of a gas undergoes a thermodynamic process as shown such that heat interaction along path B C A is equal to the work done by the gas...
- Q of a body falls 36 C in 10 minutes when placed in a surrounding of constant temperature 20 C What will be the temperature of the body after another 10...
- Q Given T P curve for three processes If initial and final pressure are same for all processes then work done in process 1 2 and 3 is W W2 W3...
- Q I The SI unit of calorific value is KJ kg II Fuels containing oxygen atoms have high calorific value than those of hydrocarbons III Ideal fuel have high calorific value...
- Q Fig 12 6 12 10 Consider a cycle followed by an engine Fig 12 6 1 to 2 is isothermal 2 to 3 is adiabatic 3 to 1 is adiabatic...
- Q Which of the processes described below are irreversible a The increase in temprature of an iron rod by hammering it b A gas in a small cantainer at a temprature...
- Q A cylinder containing an ideal gas is in vertical position and has a piston of mass M that is able to move up or down without friction Fig 13 2...
- Q A one metre long both ends open organ pipe is kept in a gas that has double the density of air at STP Assuming the speed of sound in air...
- Q The volume V of a monatomic gas varies with its temperature 7 as shown in the graph The ratio of work done by the gas to the heat absorbed by...
- Q 1 g of water of volume 1 cm at 100 C is converted into steam at same temperature under normal atmospheric pressure 1x 105 Pa The volume of steam formed...
- Q If during an adiabatic process the pressure of mixture of gases is found to be proportional to square of its absolute temperature The ratio of Cp C for mixture of...
- Q 5 A certain mass of air initially at 150 kPa 0 13m is compressed in a reversible isothermal process During this process heat transfer to air is 20kJ and the...
- Q The P V plots for two gases during adiabatic processes are shown in the figure The graphs 1 and 2 should correspond respectively to P 12 2 0 0 1...
- Q Two cylinders contain same amount of ideal monatomic gas Same amount of heat is given to two cylinders If temperature rise in cylinder A is To then temperature rise in...
- Q During one cycle the working fluid in an engine engages in two work interactions 15 kJ to the fluid and 44 kJ from the fluid and three heat interactions two...
- Q Tixed In a thermodynamic process mass of a gas is changed in such a manner that the gas releases 20 J of heat when 8 J of work was done...
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