Physics question and answers for February 26, 2024
- Q Two identical glass bulbs are interconnected by a thin glass tube at 0 C A gas is filled at N T P in these bulb is placed in ice and...
- Q Two containers of equal volume contain same gas at pressure P and 3P respectively and temperatures 2T and T respectively On joining the vessels the gas reaches a common pressure...
- Q The graph between pressure of an ideal gas and the root mean square speed of its molecules is Assume constant density Ellipse Parabola Hyperbola Straight Line
- Q From the given graph which of the following conclusions can be drawn u is number of moles Ideal gas J mol pV HT 0 T T T3 200 400 600...
- Q O One kg of a diatomic gas is at pressure of 8 104 N m The density of the gas is 4 kg m The energy of the gas due...
- Q Two closed containers of equal volume filled with air at pressure Po and temperature T Both are connected by a narrow tube If one of the container is maintained at...
- Q An ideal gas is filled in a closed container and container is moving with uniform acceleration in horizontal direction Neglect gravity Pressure inside the container is 1 Uniform everywhere 2...
- Q An ideal gas undergoes a polytropic given by equation PV constant If molar heat capacity of gas during this process is arithmetic mean of its molar heat capacity at constant...
- Q The temperature 7 of one mole of an ideal gas varies with its volume V as T V BV where a and are positive constants The maximum pressure of gas...
- Q 2 If one mole of the polyatomic gas is having tw vibrational modes and is the ratio of mola Cp B C the specific heats for polyatomic the value of...
- Q Consider the following two statements a If a gas container in motion is suddenly stopped th temperature of the gas rises b A gas can be liquefied at any temperature...
- Q The graph between the mean free path and the radius of molecules for a given number density is Linear Hyperbola Parabola Ellipse
- Q The expansion of unit mass of a perfect gas at constant pressure is shown in the diagram Here a K Question Type Single Correct Type 1 2 3 a volume...
- Q square rms velocity to the average velocity of gas molecule would be Molecular weight of oxygen is 32 g mol R 8 3 J K mol 100100001 8T V 3...
- Q ree ideal gases H CH4 and SO2 are filled in three rigid containers A B and C respectively WH 64 gm W 64 CH V 2L T 200 K gm...
- Q A horizontal tube of length closed at both ends contain an ideal gas of molecular mass M The tube is rotated with angular velocity w about a vertical axis passing...
- Q 6 If one mole of the polyatomic gas is having two vibrational modes and is the ratio of molar specific heats for polyatomic gas B ons 1 1 02 2...
- Q 1 In a constant volume gas thermometer the pressure of the gas in the bulb is 28 cm and 44 cm of Hg at temperature 0 C and 100 C...
- Q The root mean square rms speed of hydrogen molecules at a certain temperature is 300 m s If the temperature is doubled and hydrogen gas dissociates into atomic hydrogen the...
- Q 2 Illustration 19 Two perfect gases at absolute temperatures T and T are mixed There is no loss of energy If masses of the molecules are m and m and...
- Q Illustration 17 At what temperature does the average translational kinetic energy of a molecule in a gas equal to the kinetic energy of an electron accelerated from rest through a...
- Q Illustration 8 A closed container of volume 0 02 m contains a mixture of neon and organ gases at a temperature of 27 C and pressue of 1 x 105...
- Q Two bulbs A and B of same volume contain an ideal gas at temperature T and pressure p When the temperature of the bulb B is doubled and that of...
- Q 1 At 27 C temperature the kinetic energy of an ideal gas is E If the temperature is increased to 327 C then kinetic energy would be 1 2E 2...
- Q A sample of an ideal gas has pressure Po volume Vo and temperature To It is isothermally expanded to twice its original volume It is then compressed at constant pressure...
- Q 5 Average velocity of oxygen molecules at 27 C in a container at rest is 1 980 m s 3 370 m s 2 Zero 4 863 m s
- Q 1 A flask contains neon and oxygen in the ratic 4 5 by mass The temperature of the mixture is 50 C The ratio of their mean translational kinetic energy...
- Q Illustration 12 The velocities of four molecules of a gas are 3 3 4 6 m s the root mean square velocity will be
- Q Illustration 13 The temperature of an ideal gas increased from 120 K to 480 K The root mean square velocity of the gas molecules is v at 480 K it...
- Q 9 The rms velocity of nitrogen molecule in a cylinder containing nitrogen gas at 17 C is 5x10 2 m s If the diameter of the nitrogen molecule is roughly...
- Q The temperature of n moles of an ideal gas is increased from T to 27 through a process P 0 1aT The work done by the gas is given by...
- Q A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300 K The ratio of the average rotational kinetic energy per O molecule to...
- Q 5 The given graph represent the variations compressibility factor Z versus p for three real pV nRT gases A B and C Identify the only incorrect statement 2006 5M nive...
- Q Two thermally insulated vessels 1 and 2 are filled with air at temperatures T T volume V V and pressure P P2 respectively If the valve joining two vessels is...
- Q 1 The volume of some amount of oxygen at 27 C and at 70 cmHg pressure is 400 cm What will be its volume at STP What change will be...
- Q Three moles of an ideal monoatomic gas performs a cyclic process as shown in the figure The temperatures in different states are T 400K T2 800K T3 2400K and T4...
- Q 4 At STP the density of air is 0 00129 g cm If the barometric height decreases from 76 cm to 74 cm then what will be the difference in...
- Q 3 15 RT 4 9 RT of the system is 1 11 RT 2 4 RT 15 An insulated container contains 4 moles of an ideal diatomic gas at temperature...
- Q 22 Calculate the mass of 1 litre of moist air at 27 C when the barometer reads 753 6 mm of mercury and the dew point is 16 1 C...
- Q because of their high speeds and incessant collisions In slight increase in density at lower heights like in the atmosphere The effect is small since the potential energy mgh for...
- Q The pressure of a gas ta 100 C is 2 atm When the gas is heated by keeping volume constant at what temperature the pressure raises to 3 atm 1...
- Q Two vessels A and B having equal volume contain equal masses of hydrogen in A and helium in B at 300 K Then mark the correct statement 1 The pressure...
- Q 2 A flask is filled with 13g of an ideal gas at 27 C and its temperature is raised to 52 C The mass of the gas that has to...
- Q 8 A vessel contains 8gm of a gas at a pressure P and temperature 500K The gas leaves through a small hole The mass of the gas leaked out when...
- Q Molecular heory Two thermally insulated vessels 1 and 2 are filled with air at temperatures T T volume V V and pressure P P respectively If the valve joining the...
- Q The kinetic energy of translation of 20 gram of oxyg 47 C is Molecular weight of O 32 gram mo R 8 3 J mol K a 2490 ergs c...
- Q 4 moles of diatomic ideal gas are heated at constant pressure from 27 C to 327 C The heat 2 cal mole K supplied to the gas is 1 3000...
- Q Which of the following is not an assumption of the kinetic theory of gases 1 A A gas consists of many identical particles which are in continual motion 2 3...
- Q The average kinetic energy of a helium atom at 30 C is MP PMT 2004 a Less than 1 eV c 50 60 eV b A few keV d 13...
- Q 1 A vessel of volume 0 04 m contains a mixture of hydrogen and helium at 20 C and 2 atmospheric pressure and the mass of mixture is 10 g...
- Q 154 The mean free path for a gas with molecular diameter d and number density n can be expressed as 1 3 4 1 2 n d 1 2 nnd...
- Q 1 In an ideal gas at temperature T the average force that a molecule applies on the walls of a closed container depends on T as T A good estimate...
- Q I A fix amount of nitrogen gas subjected to pressure and temperature variation The experiment is performed at high pressure as well as high temperatures The results obtained are shown...
- Q 7 The amount of heat energy required to raise the temperature of 1 g of Helium at NTP from T K to T K is 1 NakB T T 3...
- Q partition wall 1 mole He Po To Consider the adjacent figure a piston divides a cylindrical container into two parts The left part contains 1 mole of helium gas and...
- Q The time average of the kinetic energy of one molecule of a MP PET 1992 gas taken over a long period of time a Is proportional to the square root...
- Q body maintained at temperature T then energy radiated per second by black body will be 1 E 0 3 GAT4 2 E 0 7 GAT4 3 E 0 5 GAT4...
- Q When photons of wavelength 2 are incident on an isolated sphere suspended by an insulated thread the corresponding stopping potential is found to be V When photons of wavelength are...
- Q 57 One mole of an ideal gas undergo Po P 1 V V Here Po and Vo are constants Change in temperature of the gas when volume is changed from...
- Q re n dis is constant pressure The increase in internal energy of gas will be 1 80 J 5701 3 120 J 2 100 J 4 200 J 24 An...
- Q Given Avogadro number N k 1 38 x 10 23 J molecule K Calculate The average kinetic energy of translation of an oxygen molecule at 27 C The total kinetic...
- Q The mean free path of benzene molecule is 6 x 10 6 m and average speed of molecules is 1 2 x 103 m s The collision rate of molecules...
- Q 1 One mole of argon is expanded polytropically n 1 50 In the process temperature of gas reduces by 26 K Heat absorbed by gas in kilojoule is a 0...
- Q An ideal gas in a container of dimension If v velocity of a molecule of the gas the collid frequency on the wall of container is 1 3 V IN...
- Q If the volume of the gas containing n number o moles is V then pressure will decrease due to force of intermolecular attraction in the proportion n 1 V 3...
- Q 3 An ideal gas is enclosed in a cylinder at pressure of 2 atm and temperature 300 K The mean time between two successive collisions is 6 10 8 s...
- Q A gas at pressure Po is contained in a vessel If the masses of all the molecules are halved and their speeds doubled the resulting pressure would be 1 4Po...
- Q The rms value of this current as shown in figur 10 1 49 10 10 10 T 2 A T 2 2017 0 b T s
- Q 12 If E and E denote the isothermal and adiabatic elasticities respectively of a diatomic gas then E 4 Eo 1 1 3 1 same 2 1 4 0 7
- Q 5 The change in volume V with respect to an increase in pressure P has been shown in the figure for a non ideal gas at four different temperatures T...
- Q Two moles of helium are mixed with n moles of hydrogen The root mean square rms speed of gas molecules in the mixture is 2 times the speed of sound...
- Q A container is filled with a sample of gas having n molecules with speed a 2x 3x na The ratio of average speed to root mean square speed is 1...
- Q Two isotherms of an idea temperatures T and T as shown below If Oa ab then the ratio of rms speed of gas molecules at temperature T and T is...
- Q 130 An ideal gas mixture filled inside a balloon expands according to the relation PV2 3 constant The S temperature inside the balloon is O 1 increasing 3 constant 2...
- Q One mole of an ideal monoatomic gas is taken from temperature To to 2To by the process PT C Considering the following statements choose the correct alternative 1 Molar heat...
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