Physics question and answers for February 19, 2024
- Q m When a force Facts at a point p at position from the origin O torque of this force about O is defined ast fxF It is a vector quantity...
- Q A sample of an ideal gas is taken through a cycle a shown in figure It absorbs 50J of energy during the process AB no heat during BC rejects 70J...
- Q In the shown indicator diagram over pressure volume scales n moles of an ideal gas in cycled If the temperature of the gas in the state X and Y are...
- Q A solar heat engine uses parabolic collector supplying heat to the working fluid at 500 C A second engine employs a plate collector supplying heat to the working fluid at...
- Q 1 8 A piece of ice heat capacity 2100 Jkg C and latent heat 3 36 x 105 J kg of mass m gram is at 5 C at atmospheric...
- Q Which of the following plots is are hyperbolic A P V diagram for an isothermal process B Current density versus area of cross section in a current carrying wire C...
- Q 1 An ideal diatomic gas undergoes a thermodynamic process where pressure P as a 3V function of volume V is given by P Pev The average rotational kinetic energy of...
- Q P V and Pf Vf are initial and final pressures and volumes of a gas in a thermodynamic process respectively If PV constant then the amount of work done is...
- Q An ideal gas expands isothermally from volume V to V and then it is adiabatically compressed back to its original volume V The initial and final pressures of the gas...
- Q A metal sphere of radius R at a temperature TO was placed in a medium of lower temperature T1 Find the partial differential equation describing the variation of the temperature...
- Q The figure shows a Carnot cycle for an ideal gas on a P V diagram Then where 1 2 and 3 4 are isothermal and 2 3 and 4 1...
- Q 20 The relation between internal energy pressure and volume U P and V for a certain gas is U a bPV where a and b are positive constants Then equation...
- Q mole of an ideal gas contained in a cylinder undergoes a thermodynamic process during which pressure relates to volume as 1 5R 2 6AB 3 P are constants As the...
- Q A piston cylinder device contains 3 lbm of refrigerant 12 at 120 psia and 120 F The refrigerant is cooled at constant pressure until it exists as a compressed liquid...
- Q 7 c 2x 10 s d 0 5 x 11 A vertical closed cylinder is separated into two parts by a frictionless piston of mass mand of negligible thickness The...
- Q A pressure P absolute temperature T diagram was obtained when a given mass of gas was heated During the heating process from the state 1 to state 2 the volume...
- Q 13 A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature T Considering only translational and rotational modes the total internal energy of the...
- Q 33 The graph shows logarithmic readings of pressure and volume for two ideal gases A and B undergoing adiabatic It can be process conduded that one of the gases A...
- Q A closed system undergoes a process 1 2 for which the values W 2 and Q1 2 are 50 kJ and 20 kJ respectively If the system is returned to...
- Q 5 A thermodynamic system is taken from an original state to an intermediate state by the linear process shown in Fig 12 13 Pressure P N m 600 300 2...
- Q a Two bodies at different temperatures T and T if brought in thermal contact do not necessarily settle to the mean temperature T T 2 b The coolant in a...
- Q 1 A geyser heats water flowing at the rate of 3 0 litres per minute from 27 C to 77 C If the geyser operates on a gas burner what...
- Q 20 An ideal gas is trapped in a thin glass tube of cross section area between two metallic pistons that can slide without friction Initially th pistons stay in equilibrium...
- Q If the intermolecular forces vanish away the volume occupied by the molecules contained in 4 5 kg water at standard temperature and pressure will be 1 5 6 m 2...
- Q 16 A gas enclosed in a chamber passes through the cycle as shown Determine the net heat added to the system during process CA if the heat QAB added during...
- Q Shafts A and B connect the gear box to the wheel assemblies of a tractor and shaft C connects it to the engine Shafts A and B lie in the...
- Q 14 An ideal gas has an initial pressure of 3 pressure units and an initial volume of 4 volume units Which of the following values of final pressure and volume...
- Q One kilogram of water at room temperature is brought into contact with a high temperature thermal reservoir The entropy change of the universe is 1 equal to entropy change of...
- Q Temperature of a 5 mole of hydrogen gas decreases by 260K while expanded through adiabatic process What is the change in internal energy of the gas 1 1350 J 2...
- Q A tank of carbon dioxide at room temperature and pressurized to 60 atm is used to make dry ice solid carbon dioxide based on the cooling provided by the adiabatic...
- Q Example 6 Given Avogadro s number N 6 02 x 1023 and Boltzmann s constant k 1 38 10 23 J K a Calculate the average kinetic energy of translation...
- Q A reversible heat engine receives 2 kJ of heat from a reservoir at 1000 K and a certain amount of heat from a reservoir at 800 K It rejects 1...
- Q What amount of heat in J is to be transferred to nitrogen in the isobaric heating process for the gas to perform the work of 2 0J fy af fod...
- Q A gaseous mixture consists of 20 g of hellum and 32 g of oxygen The ratio 0 12 1 6 02 1 0 28 for the mixture is 100 21...
- Q A Carnot engine receives 2 0 kJ of heat from a reservoir at 500 K does some work and rejects some heat to a reservoir at 350 K a How...
- Q A man of mass m stands on a crate of mass M He pulls on a light rope passing over a smooth light pulley The other end of the rope...
- Q A heat engine operates between a high temperature reservoir at 610 K and a low temperature reservoir at 320 K In one cycle the engine absorbs 6400 J of heat...
- Q a How much heat is required to convert 7 5 kg of ice from a temperature of 12 C to water vapor at a temperature of 200 F b You...
- Q The amount of heat energy required to raise the temperature of Ig of Helium at NTP from T K to T K is T 1 NK T T 3 2...
- Q A thermally insulated piston divides a container into two compartments Volume temperature and pressure in the right compartment are 2V T and 2P while in the left compartment the respective...
- Q A diffuser has air entering at 100 kPa 300 K with a velocity of 200 m s The inlet cross sectional area of the diffuser is 100 mm At the...
- Q A heat engine operating between a hot reservoir at 600 K and a cold reservoir at 200 K has an efficiency that is 70 of its maximum possible value If...
- Q 2 For liquid water the isothermal compressibility is given by K V P b where c b are functions of temperature only If 1 kg of water is compressed isothermally...
- Q A rigid and insulated tank of 2 m capacity is divided into two equal compartments by a partition One compartment contains an ideal gas at 600 K and 1 MPa...
- Q 4 An ideal gas heat engine operate between 27 C and 127 C If it absorbs 10 kcal per cycle at higher temperature then amount of heat energy thrown to...
- Q An ideal gas expands from initial volume V to final volume V in two ways viz slowly and quickly re Then 1 Final pressure of quicker expansion is more than...
- Q 10 300 c 0 125 cm g 0 516 J gm 3 Calculate the reversible work done in compressing 0 0283 m of mercury at a constant and temperature of...
- Q A large chunk of ice at 0 C is thrown into lake Ontario at 15 C Heat flows from the lake into the ice until to melt it While it...
- Q Express the volume expansivity and the isothermal compressibility as functions of density p and its partial derivatives For water at 323K 50 C and 1 bar k 44 18x10 bar...
- Q ays positive J K CET gas is changed of the following 1 P V T V JIPMER mal energy and e system then 46 The four curves A A2 A3...
- Q Liquid water at 25 C and I bar fills a rigid vessel If heat is added to the water until its temperature reaches 50 C what pressure is developed The...
- Q A thermally insulated chamber of volume 2V0 is divided by a frictionless insulating piston of area S into two equal parts A and B Part A has an ideal gas...
- Q 57 When a monochromatic point source of light is at a distance r from a photoelectric cell the cut off voltage is V and the saturation current is I If...
- Q The given indicator diagram shows variation of pressure with volume when a thermodynamical system is taken from state A to state B During the process PA A B V 0...
- Q MPLE 13 The cylinder shown in the figure has conducting walls and temperature of the surrounding is T the pistion is initially in equilibrium the cylinder contains n moles of...
- Q The efficiency of a Carnot engine at a particular source and sink temperature is When the sink temperature is reduced by 50 C the engine efficiency becomes Source temperature should...
- Q A body of mass 5 kg falls from a height 30 metre If its all mechanical energy is change into heat then heat produced will be 2 150 cal 1...
- Q 4 increase the sensitivity 3 increase the moment of inertia According to Newton s law of cooling the rate of cooling of a body is proportional to AO where A...
- Q One mole of an ideal gas is taken from state P to state Q by three different processes 1 PRQ II PSQ and III PTQ as shown in the figure...
- Q A hot body at temperature T losses heat to the surrounding temperature Ts by radiation If the difference in the temperature is small then the rate of loss of heat...
- Q One mole of ideal gas undergoes cyclic process shown in figure Process 12 is adiabatic Heat given to gas in the process is nearly A Q W DU 2 63...
- Q The ratio Cp Y for an ideal gas Its molecular weight is M Its specific heat capacity at constant pressure is Cv R Y 1 YR Y 1 YR M...
- Q A cubical container having each side as is filled with a gas having N molecules in the container Mass of each molecule is m If we assume that at every...
- Q Exam 15 13 A thermodynamical 3 A m C process is shown in figure with PA 3 10 Pa V 2 10 PB 8 x 104 Pa Vc 5 x...
- Q A cylindrical vessel with a massless movable piston of area of cross section 0 1 m contains an ideal gas The piston is connected to an ideal spring of spring...
- Q 46 An ideal monoatomic gas undergoes a cyclic process shown by following P V diagram The dotted curves are isotherms The efficiency of a heat engine based on this process...
- Q round the reversible rectangular cycle ABCDA as shown in the diagram The temperature at A is To B 2Po P Po A To C D Vo 2V0 V The thermodynamic...
- Q A thermodynamic system is taken from an initial state i with internal energy U 100 J to the final state f along two different paths iaf and ibf as schematically...
- Q 5 The volume of a gas reduced to one third of its original volume slowly Calculate the final pressure if the initial pressure is 4 atmospheric Ans 12 atmospheric 5...
- Q 88 On a pT diagram a cyclic process is performed as shown Where is the volume maximum a a P b b a ck b d c c T d...
- Q 7 Water at 20 C is poured into a test tube whose bottom is immersed in a large amount of water at 80 C As a result the water in...
- Q Figure 26 E5 1 A gas is taken through a cyclic process ABCA as sh in figure 26 E6 If 2 4 cal of heat is given in the pro...
- Q If a moles of a monoatomic gas are mixed with B moles of a polyatomic gas and mixture behaves like diatomic gas then neglect the vibrational mode of freedom 1...
- Q where y is the ratio of specific heats dv V dv V 1 dV Y V Y V dv
- Q A closed container has two non reactive gases neon and oxygen with their partial pressure ratio 3 2 If the atomic mass of Ne 20 2 u and molecular mass...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!