Unit 16 Solved All Numericals class 12 Physics National book foundation 2025 | FIBSE| Federal Board скачать в хорошем качестве

Unit 16 Solved All Numericals class 12 Physics National book foundation 2025 | FIBSE| Federal Board

Playlist class 12 NBF 👇    • Class 12 Federal Board   MCQ'S Unit 16 link 👇    • Unit 16 Solved MCQ'S Class 12 Physics| Nat...   Unit 16 Statistical Mechanics & Thermodynamics Numerical Problems 00:00 Q1. The mass of a helium atom is 6.64 × 10⁻²⁷ kg. Calculate the root mean square speed of helium atom in a gas at a temperature of 15°C. 03:12 Q2. At which temperature will the root mean square velocity of the oxygen molecules become equal to the escape velocity of the earth (11.2 km s⁻¹). (Mass of one molecule of oxygen is 5.3 × 10⁻²⁶ kg and Boltzmann constant k = 1.38 × 10⁻²³ J K⁻¹). 07:02 Q3. The mass of a molecule of a gas is 6.4 × 10⁻²⁷ kg. Calculate the root mean square speed of gas molecule and kinetic energy per molecule at temperature 400 K. 11:56 Q4. At which temperature the root mean square speed of gas molecules becomes double than its speed at 27°C, (pressure of gas is kept constant). 14:01 Q5. Determine the root mean square speed of argon atoms at temperature 40 °C. The molar mass of argon is 39.95 g mol⁻¹. 16:38 Q6. Calculate the number of gas molecules in a cubic meter of gas at standard temperature and pressure (STP). 19:24 Q7. A vessel A contains hydrogen and another vessel B whose volume is twice of vessel A contains same mass of oxygen at the same temperature. Find (i) the ratio of the root mean square speeds of hydrogen and oxygen gases. (ii) the ratio of pressures of gases in vessels A and B. [Molar mass of hydrogen and oxygen are 2 and 32 respectively. #Class12Physics #PhysicsGrade12 #FederalBoardPhysics #FBISEPhysics2025 #PhysicsNewSyllabus #NationalBookFoundation #StatisticalMechanics #Thermodynamics #PhysicsUnit16 #FBISE2025