Chapter 13 Thermal Physics | Exercise Short Questions | 12th Class Physics New Syllabus

12th Class Physics New Book – Chapter 13: Thermal Physics | Exercise Short Answer Questions In this lecture, we solve all Exercise Short Answer Questions from Chapter 13 – Thermal Physics according to the Punjab Board New Syllabus. Every question is explained in a simple and easy-to-understand way with board-style written answers, clear concepts, and daily life examples to help students prepare for their board exams with confidence. Questions Covered: 13.1 Do all gases have the same kinetic energy at the same temperature? If yes, give example. 13.2 A vessel is fitted with a mixture of two different gases. Will the mean kinetic energy per molecule of gases be equal? Explain briefly. 13.3 If density of a gas is doubled, keeping all other factors unchanged, what will be the effect on the pressure of the gas? 13.4 A gas enclosed in a container is heated up. What is the effect of pressure on gas molecules? 13.5 The number of molecules of a gas in a container is doubled. What will be the effect on the rms speed? 13.6 Explain briefly why it is not possible to increase the temperature of a gas while keeping its volume and pressure constant. 13.7 On reducing the volume of a gas at constant temperature, the pressure of the gas increases. Explain briefly on the basis of the kinetic theory of gases. 13.8 How does the balance between gravitational force and internal pressure determine whether a star expands or contracts during its evolution? This lecture is useful for: 12th Class Physics Students FSc Part 2 Students ICS Part 2 Students Punjab Board Students Board Exam Preparation Concept Building & Revision Time Stamps 00:00 – Introduction 01:50 – Question 13.1 09:56 – Question 13.2 13:58 – Question 13.3 18:17 – Question 13.4 22:39 – Question 13.5 28:31 – Question 13.6 32:45 – Question 13.7 37:59 – Question 13.8 If you found this lecture helpful, please Like, Share, and Subscribe for more Physics lectures based on the Punjab Board New Syllabus.