Kelvin Scale In this scale of temperature, the melting pouxl ice is taken as 273 K and (i) Apparent Expansion of Liquids When expansion of th container containing liquid, on heating is not taken into accoun then observed expansion is called apparent expansion of liquids. 180 equal parts. (ii) Pressure Coefficient (γp) At constant volume, the change in pressure per unit pressure pe degree celsius is called pressure coefficient. where 1= real length and Δl = change in length and Δt= change in temperature. Increase in size on heating is called thermal expansion. If two bodies A and B are separately in thermal equilibrium with thirtli body C, then bodies A and B will be in thermal equilibrium with each other. where, ll and l2 are initial and final lengths,Δt = change in temperature and α = coefficient of linear expansion. Please send your queries to ncerthelp@gmail.com you can aslo visit our facebook page to get quick help. 1. The temperature at which a liquid boils, is called boiling point The boiling point of water increases with increase in pre sure decreases with decrease in pressure. Download Physcis Notes Of Thermal Properties Of Matter For Class 11 In PDF. • However, at lower temperature scale reading will be more or true value will be less. Amount of heat energy required to change the temperature of any substance is given by. • c = specific heat of the substance and This is the branch of heat transfer that deals with the measorette heat. Link of our facebook page is given in sidebar. The specific heat capacity at constant volume (Cv Unknown temperature of hot junction when cold junction is at 0°C. 1. Effects of forces b. where V0, V1, and V2 behaviour of water around 4°C is called, anamalous expansion water. CBSE Syllabus Class 12 Maths Physics Chemistry ... CBSE Syllabus Class 11 Mathematics biology chemistry ... CBSE Syllabus Class 10 Maths Science Hindi English ... CBSE Syllabus Class 9 Mathematics Science English Hindi ... Revised Syllabus for Class 12 Mathematics. A = area, AA = change in area and At = change in temperature. 2. where p, p100. The branch dealing with measurement of temperature is called thremometry and the devices used to measure temperature are called thermometers. A constant volume gas thermometer can measure tempera from – 200°C to 500°C. A thermo-couple thermometer can measure temperature from —200°C to 1600°C. When there is no transfer of heat between two bodies in contact, the the bodies are called in thermal equilibrium. THERMAL PHYSICS NOTES PHYSICS B4B BAKERSFIELD COLLEGE Rick Darke (Instructor) THERMODYNAMICS TERMS thermodynamics - that branch of physics which deals with heat and temperature (also called thermal phys-ics) system - a definite quantity of matter enclosed by boundaries (real or imaginary) PHYS 1001: Thermal Physics Streams 2: Dr Pulin Gong Rm 434 Madsen pulin.gong@sydney.edu.au Stream 1: Dr Helen Johnston Rm 213 Physics h.johnston@physics.usyd.edu.au (i) Volume Coefficient (γv) At constant pressure, the change in volume per unit volume per degree celsius is called volume coefficient. Mechanical energy or work (W) can be converted into heat (Q) by 1 W = JQ. It is more painful to get burnt by steam rather than by boiling was 100°C gets converted to water at 100°C, then it gives out 536 heat. • where, m = mass of the substance, Heat capacity of any body is equal to the amount of heat energy required to increase its temperature through 1°C. In liquids only expansion in volume takes place on heating. The specific heat capacity at constant pressure (Cr). (iii) Length of Mercury Column in a Capillary Tube. Expansion of solids where α = coefficient of linear expansion and l0, lt are lengths of mercury column at 0°C and NCERT Notes For Physics Class 11 Chapter 11 :- Thermal Properties Of Matter. where, A1 and A2 are initial and final areas and β is a coefficient of superficial expansion. The practical unit of heat energy is calorie. = 40.8 kJ/ mol Relation between coefficients of linear, superficial and cubical expansions. Temperature of a body is the degree of hotness or coldness of the body. where V = real volume, AV =change in volume and Δt = change in temperature. Superficial Expansion Expansion in area on heating is called superficial expansion. used to measure temperature are called thermometers. Turning effect c. Conditions for equilibrium d. Centre of mass e. Scalars and vectors 1.6 Energy work power a. The values of pressure and temperature at which water coexists inequilibrium in all three states of matter, i.e., ice, water and vapour called triple point of water. • Δt = change in temperature. Triple point of water is 273 K temperature and 0.46 cm of mere pressure. Different thermometric properties thermometers have been given below. ]. The iron rim to be put on a cart wheel is always of slightly smaller diameter than that of R0 and Rt, are electrical resistances at 0°C and t°C. where a and b are constants for the pair of metals. Download PDF for future reference Install our android app for easier access . Temperature: It is the degree of hotness of an object and it can be measured by thermometer. The branch dealing with measurement of temperature is called thremometry and the devices wheel. where. Copyright @ ncerthelp.com A free educational website for CBSE, ICSE and UP board. When two junctions of a thermocouple are kept at different temperatures, then a thermo-emf is produced between the junctions, which changes with temperature difference between the junctions. A glass stopper jammed in the neck of a glass bottle can be taken out by warming the values, so that true value = scale reading (1 + α Δt). the boiling point of water as 373 K the space between these two points is divided into When a liquid is heated gradually, at a particular temperature saturated vapour pressure of the liquid becomes equal to atmospheric pressure, now bubbles of vapour rise to the surface d liquid. lose time. where, α = temperature coefficient of resistance and Highest possible temperature achieved in laboratory is about 108 while lowest possible temperature attained is 10-8 K. Branch of Physics dealing with production and measurement temperature close to 0 K is known as cryagenics, while that deaf with the measurement of very high temperature is called pyromet. (ii) Real Expansion of Liquids When expansion of the container, containing liquid, on heating After snow falls, the temperature of the atmosphere becomes very This is because the snow absorbs the heat from the atmosphere to down. PHYSICS IGCSE 2012 EXAM REVISION NOTES By Samuel Lees and Adrian Guillot 1. Fahrenheit Scale In this scale of temperature, the melt point of ice is taken as 32°F and It is the quantity of water whose thermal capacity is same as the heat capacity of the body. are volumes of the gas at 0°C, t1°C and t2°C. 1 calorie is the quantity of heat required to raise the temperature of 1 g of water by 1°C. For water at its normal boiling point or condensation temperature (100°C), the latent heat of vaporisation is, L = 540 cal/g where V1 Temperature of the core of the sun is 107 K while that of its surface 6000 K. NTP or STP implies 273.15 K (0°C = 32°F). and pt, are pressure of a gas at constant volume 0°C, 100°C and t°C. When rails are laid down on the ground, space is left between the end of two rails. Heat Heat is a form of energy called thermal energy which flows from a higher temperature body to This process is called boiling of the liquid. the boiling point of water as 211 and the space between these two points is divided into J is a conversion factor (not a physical quantity) and its value is 4.186 J/cal. Conversion of solid into liquid state at constant temperature is melting. Linear Expansion Expansion in length on heating is called linear expansion. When a hot body is mixed with a cold body, then heat lost by ha is equal to the heat gained by cold body. equal parts Boiling. The conversion of a solid into vapour state is called sublimation. Physics Notes Class 11 CHAPTER 11 THERMAL PROPERTIES OF MATTER The branch dealing with measurement of temperature is called thremometry and the devices used to measure temperature are called thermometers. 2. Chapter 11 : Thermal Properties of Matter, Chapter 7 : System Of Particles And Rotational Motion, Chapter 9 : Mechanical Properties of Solids, Chapter 10 : Mechanical Properties Of Fluids, NCERT Solutions for Class 9 Science Maths Hindi English Math, NCERT Solutions for Class 10 Maths Science English Hindi SST, Class 11 Maths Ncert Solutions Biology Chemistry English Physics, Class 12 Maths Ncert Solutions Chemistry Biology Physics pdf, Class 1 Model Test Papers Download in pdf, Class 5 Model Test Papers Download in pdf, Class 6 Model Test Papers Download in pdf, Class 7 Model Test Papers Download in pdf, Class 8 Model Test Papers Download in pdf, Class 9 Model Test Papers Download in pdf, Class 10 Model Test Papers Download in pdf, Class 11 Model Test Papers Download in pdf, Class 12 Model Test Papers Download in pdf. ΔT =(1/2)α Δθt, • At some higher temperature a scale will expand and scale reading will be lesser than true where J = Joule’s mechanical equivalent of heat. where p0, p1 and p2 are pressure of the gas at 0°C, t1° C and t2° C. 1. A device which is used to measure the temperature, is called a thermometer. are initial and final volumes and γ is a coefficient of cubical expansion. There are three types of thermal expansion. Click the button below to download the full Form 1 Physics Notes pdf document, with all the topics.. Download Form 1 Physics Notes PDF to Print or Offline Reading . The ratio of two principal sepecific heats of a gas is represented by γ. is also taken into account, then observed expansion is called real expansion of liquids. Conversion of liquid into vapour at all temperatures (even below boiling point) is called cevaporation. Where E100 is the thermo-emf when hot junction is at 100°C. So, in the mountains, when snow falls, one does not feel too but when ice melts, he feels too cold. Coefficient of real expansion of a liquid. 100 equal pss, The property of an object which changes with temperature, is call thermometric property. This is because when ice cream down, it absorbs large amount of heat from teeth. ). General physics 1.1 length and time 1.2 Speed, velocity and acceleration 1.3 Mass and weight 1.4 Density 1.5 Forces a. 3. boiling point of water as 100°C and space between these two points is divided into 100 Its SI unit is joule/kilogram-°C’(J/kg-°C). neck of the bottles. Expansion of gases. t°C. Heat or thermal energy of a body is the sum of kinetic energies of all its constituent particles, on account of translational, vibrational and rotational motion. It is denoted by W. The heat energy absorbed or released at constant temperature per unit mass for change of state is called latent heat.