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Ex.1 The mass of hydrogen molecules is 3.32 × 10–27kg. If 1023 hydrogen molecules strike a fixed wall of area 2 cm2 at an angle 45º to the normal and rebound elastically with a speed of 103m/s calculate the pressure exerted on the wall –
(A) 2.347 × 103 N/m2 (B) 23.47 × 104 N/m2 (C) 234.7 × 103 N/m2 (D) 23.47 × 103 N/m2
Ex.2 Two ideal gases at temperature T1 and T2 are mixed. There is no loss of energy. If the masses of molecules of the two gases are m1 and m2 and number of their molecules are n1 and n2 respectively, the temperature of the mixture will be
Ex.3 The atomic weight of iodine is 127. A standing wave in a tube filled with iodine gas at 400 K has nodes that are 6.77cm apart when the frequency is 1000 vib/sec. iodine is
(A) Monoatomic (B)Diatomic (C) Triatomic (D) None of these
Ex.4 Certain perfect gas is found obey PV3/2 = const. during adiabatic process. If such a gas at initial temperature T is adiabatically compressed to half the initial volume, in final temperature will be –
Ex.6 An air bubble of volume V0 is released by a fish at a depth h in a lake. The bubble rises to the surface. Assume constant temperature and standard atmospheric pressure above the lake. The volume of the bubble just before touching the surface will be (density) of water is r
Ex.7 Two gases occupy two containers A and B the gas in A, of volume 0.10m3, exerts a pressure of 1.40 MPa and that in B of volume 0.15 m3 exerts a pressure 0.7 MPa. The two containers are united by a tube of negligible volume and the gases are allowed to intermingle. Then it the temperature remains constant, the final pressure in the container will be (in MPa) –
(A) 0.70 (B) 0.98 (C) 1.40 (D) 2.10
Ex.8 If the pressure of a gas contained in a closed vessel is increased by 0.5% when heated by 2ºC, then the initial temperature must be
(A) 127ºC (B) 273ºC (C) 400ºC (D) 673ºC
Ex.9 What is the degree of freedom of gas ? If at STP the velocity of sound in it is 330 m/sec and gas density = 1.3 mg/cm3.
(A) 2 (B) 3 (C) 5 (D) 4
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CBSE Class 11 Physics Study Material: Kinetic Theory of Gases
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Our advanced study package for Kinetic Theory of Gases includes detailed concepts, diagrams, Mind Maps, and explanation of complex topics to ensure Class 11 students learn as per syllabus for 2026 exams.
The Mind Maps provided for Kinetic Theory of Gases act as visual anchors which will help faster recall during high-pressure exams.
Yes, teachers use our Class 11 Physics resources for lesson planning as they are in simple language and have lot of solved examples.
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Yes, our subject matter experts have updated the Kinetic Theory of Gases material to align with the rationalized NCERT textbooks and have removed deleted topics and added new competency-based questions.