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गर्मी और ऊष्मागतिकी, दिशा प्रकाशन द्वारा : जेईई मेन और उन्नत परीक्षा हेतु पीडीऍफ़ बुक | Heat and Thermodynamics by Disha Publication : For JEE Main and Advanced Exam PDF Book

गर्मी और ऊष्मागतिकी, दिशा प्रकाशन द्वारा : जेईई मेन और उन्नत परीक्षा हेतु पीडीऍफ़ बुक | Heat and Thermodynamics by Disha Publication : For JEE Main and Advanced Exam PDF Book


Heat-and-Thermodynamics-by-Disha-Publication-For-JEE-Main-and-Advanced-Exam-PDF-Book


Name of Book :  Heat and Thermodynamics / गर्मी और ऊष्मागतिकी 

Hope This Heat and Thermodynamics Book will Step up you to Succeed / आशा करते हैं गर्मी और ऊष्मागतिकी पुस्तक आपके कदम सफलता की ओर ले जायगी

Language of Book : English

Size of Ebook : 13 MB

Total pages in ebook : 210

Ebook Downloading Status  : Best 
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Description about eBook : INTRODUCTION
Mechanics deals with the quantities like; acceleration, force, mechanical energy (external energy) and Newton’s second law and conservation of energy. Thermodynamics deals with temperature, heat, internal energy, entropy and the first and second law of thermodynamics. The fundamental  quantity in thermodynamics is temperature, so we start our study  by developing the concept of temperature from its foundation.
TEMPERATURE
Temperature is a macroscopic quantity of thermodynamics which gives the sensation of hotness or coldness. Its SI unit is kelvin. The lowest temperature that has achieved in lab is 2 × 10–8 K, in the process, called nuclear spin. Scientist are trying to see how close they can come to absolute zero temperature. The highest laboratory temperature is 108 K.
Zeroth law of thermodynamics : Thermal equilibrium
A system is said to be in the state of thermodynamic equilibrium if the variable describing the thermodynamic  state of a system do not change with time. A system in thermal equilibrium have no unbalanced force between the system and the surroundings and each part of the system and the surrounding are at the same temperature. According to zeroth law of thermodynamics, if two bodies A and B are in thermal equilibrium with third body C separately, then bodies A and B are also be in thermal equilibrium. The zeroth law, came in light in 1930 s, after the first and second laws of thermodynamics had been discovered. Temperature on being central concept should have the lowest number, hence the zero.
Measuring Temperature
Any device which is used to measure the temperature is called thermometer. A thermometer makes use of some property like; length of mercury column, pressure of gas etc. whose variation with temperature is defined by a law. There is no property which varies by a law for all range of temperature. Therefore we need different properties and hence different thermometers.............

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