1 / 18

Thermo Dynamics part 2

Yuvaplus is one of the best institutions in Kolkata. Its main object is to inspire and guide individuals to become extraordinary civil servants. Yuvaplus invites students of different backgrounds and acts as a catalyst to achieve their dreams, a pilot to the bright future they have always wanted.

Yuvaplus
Télécharger la présentation

Thermo Dynamics part 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Welcome to West Bengal’s 1st Learning Mate For More Live Class & PDF  https://www.yuvaplus.in yuvaplus Subscribe Our Youtube Channel:

  2. YUVA PLUS MOCK TEST SERIES:*More than 2000 Mocks*Daily English, GI, Maths & GS Mocks*Monthly Current Affairs Test*Mocks for SSC CGL/CHSL/MTS*Mocks for RRB NTPC/Group D*Mocks for WBCS & WBPSC*Mocks for TET & many more…..

  3. We are going offline as well.Presenting Yuva Classes at Garia.For admission call us at 6290123176 or (033) 3554 5709নেইকোনোচিন্তাযখনসাথেথাকে YUVA Hold the VisionTrust the Process

  4. For More Live Classes& PDF https://www.yuvaplus.in

  5. THERMODYNAMICS PART 2 For More Live Classes& PDF https://www.yuvaplus.in

  6. Expansion of gases: Gases are the most active substances which take part in thermal expansion Boyle’s law: PV = constant (at constant temperature) Charle’s law: V/T = constant (at constant pressure) Combined law: PV/T = constant For More Live Classes& PDF https://www.yuvaplus.in

  7. Calorimetry: The branch of thermal physics in which heat is measured by the principle of heat lost and heat gained is called calorimetry The heat lost or gained by a body depends on the mass of the body and on the rise or fall in its temperature H = mst ; s = specific heat capacity of the body m = mass t= change in temperature Unit of s = J Kg-1 K-1 (in SI) = cal gm-1 °C-1 For More Live Classes& PDF https://www.yuvaplus.in

  8. Specific heat capacities:- At constant pressure(cp) : The amount of heat required to raise the temp of 1kg mass of a gas through 1K at constant pressure is called specific heat capacity of gas at constant pressure(cp) At constant volume(cv) : The amount of heat required to raise the temp of 1kg mass of a gas through 1K at constant volume is called specific heat capacity of gas at constant pressure(cv) Relation between them: cp – cv = R cp/ cv = ϒ For More Live Classes& PDF https://www.yuvaplus.in

  9. Water equivalent: This is the quantity of water in kg which will require the same amount of heat to raise its temp through 1K as it required by the body when heated through the same temperature Unit: Kg or gm If m be the mass of a body in Kg and s be the specific heat in SI unit, then water equivalent of the body W = ms/4200 Latent heat of fusion:The latent heat of fusion of a substance is defined as the quantity of heat required to convert 1Kg of the substance from solid to liquid without change of temp at its melting point H = mL Unit: Joule / Kg and cal / gm For More Live Classes& PDF https://www.yuvaplus.in

  10. The latent heat of ice 80 cal/gm = 336*103 J/kg Latent heat of vaporisation: The latent heat of vaporisation of a substance is defined as the quantity of heat required to convert 1kg of the substance from liquid to vapour state without change of temperature at its boiling point H = mL Latent heat of water 536 cal/gm = 2250*103 J/kg For More Live Classes& PDF https://www.yuvaplus.in

  11. Transmission of heat There are three types of transmission of heat Conduction Convection Radiation 1) Conduction: By this process heat is transferred from one place to another by the particles vibrations of the substance but these particles do not leave their occupied position e.g: Conductor(metal, acidic water, human body) etc For More Live Classes& PDF https://www.yuvaplus.in

  12. 2) Convection: In this process heat is transmitted in the substance by transfer of molecules of the substance and thus a current due to the molecules transfer is generated which is called convectional current • Specially in liquid and gas heat is transmitted by the process of convection and as molecules of solid are not free to move, so heat can not be transmitted in solid by the process of convection For More Live Classes& PDF https://www.yuvaplus.in

  13. 3) Radiation: In this process there is no need of any medium for the transmission of heat, while in conduction and convection a medium is necessarily needed Thermal radiation is an electromagnetic wave which can transmit even in vacuum e.g: heat energy from the sun is a best example of radiation process For More Live Classes& PDF https://www.yuvaplus.in

  14. Difference between thermal radiation and light radiation Thermal radiation (heat radiation) and light radiation(optical radiation) both have the same form of radiant energy and the difference between them is a difference of frequency or wavelength Sources of thermal radiation: any hot body maintained at a constant temperature may serve as a source of thermal radiations. The earliest source was leslie cube but nowadays Fery and Wien’s blackbody are used mostly For More Live Classes& PDF https://www.yuvaplus.in

More Related