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# DC Pandey Waves and Thermodynamics Solutions

DC Pandey Waves and Thermodynamics Solutions have been prepared by expert Physics teachers. The chapters covered include wave motion, superposition of waves, sound waves, thermometry, thermal expansion and the kinetic theory of gases, laws of thermodynamics, and calorimetry and heat transfer.  Our well-structured DC Pandey Solutions for Waves and Thermodynamics cover all concepts and answer all questions in detail.

DC Pandey Physics solutions to all the questions are drafted in a stepwise manner to induce fast, easy and effective learning. They include essential diagrams, charts and examples to support the concepts and help you become conceptually sound. Our DC Pandey solutions have effective learning techniques that help you save time and effort. Learning from these solutions will give you ample score to improve your hold on the subject, expand your knowledge base and crack significant competitive exams such as NEET, JEE Main and JEE Advanced.

DC Pandey Waves and Thermodynamics Solutions cover all significant question types that are important from a competitive exam point of view. They are ideal study materials for learning, practising and testing your knowledge of physics. They have been tactfully designed to improve your retention rate, efficiency level and speed.

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## DC Pandey Solutions for Waves and Thermodynamics: Chapter-wise

DC Pandey Waves and Thermodynamics Book comprises 6 chapters from chapter 14 to 19. They have been discussed below.

## DC Pandey Wave Motion Solutions (Chapter 14)

Wave Motion is one of the most important chapters of DC Pandey Waves and Thermodynamics Book. In this unit, you learn about mechanical waves, non-mechanical waves, elastic waves, matter waves,  the transverse and longitudinal waves, the general equation of wave motion, plane progressive harmonic wave, speed of a transverse wave on a string and energy in a wave motion.

DC Pandey Wave Motion chapter gives you a clear picture of wave motion and what are the three different ways of wave motion. Here you will come across the medium of propagation, and the dimensions in which a wave propagates energy. Here, you will get to know why the wave propagation energy is classified into one-dimensional waves, two-dimensional waves and three-dimensional waves.

Some important terminologies you learn here include amplitude, Period, wavelength, frequency, wave velocity, phase or phase angle (O), phase difference, path difference and time difference are explained in detail with supporting examples.

This chapter comprises 4 Introductory exercises with 13 questions, 20 subjective questions (level 1), 21 objective questions(level 1), 11 assertion and reason questions, 5 match the columns questions and 9 subjective questions (level 2). This chapter has a total of 78 questions. Our DC Pandey Waves and Thermodynamics Solutions answer all questions in a step by step manner to help you learn more efficiently. They cover all the topics from the chapter.

## DC Pandey Superposition of Waves Solutions (Chapter 15)

Superposition of Waves of DC Pandey Waves and Thermodynamics will introduce you to the principle of superposition, interference of waves, and types of interference of waves such as destructive interference and constructive interference. It also talks about the conditions for destructive interference and conditions for the interference of light and resultant intensity in interference of two waves.

This chapter also covers reflection and transmission of a wave, standing waves, normal modes of string and resonance. Here, the chapter also talks about various waveforms which are explained to you with the help of the Huygens principle. The chapter also throws light on lightwave theory in which you will understand the electromagnetic fields. You shall also come to know why wavelength and frequency are important characteristics of light waves.

Chapter 15 comprises 2 introductory exercises with 13 questions, 21 subjective questions (level 1), 37 objective questions(level 1), 10 assertion and reason questions, 5 match the columns questions and 11 subjective questions (level 2). This chapter has a total of 97 questions. Our DC Pandey Physics Solutions have been methodically and strategically prepared by expert Physics teachers. They give you ample practice to become thorough with all concepts of the chapter.

## DC Pandey Sound Waves Solutions (Chapter 16)

Sound Waves is one of the most important chapters of DC Pandey Waves and Thermodynamics Solutions. Here, you will be taught about displacement waves, pressure waves and density waves, speed of a longitudinal wave, sound waves in gases, dependence on the medium, sound intensity, interference of sound waves, standing longitudinal waves in organ pipes, beats and the doppler effect. DC Pandey Sound Waves chapter mainly deals with the nature of sound, which includes the frequency of sound, the wavelength of sound, the amplitude of the sound, speed of sound and reflection of sound.

You will understand how the reflection of light is similar to the reflection of sound and why this phenomenon is called reverberation. Here, you will also learn how to calculate the speed of sound in the medium of water, air, copper, hydrogen and glass.

This chapter comprises 7 introductory exercises with a total of 33 questions, 37 subjective questions (level 1), 34 objective questions(level 1), 10 assertion and reason questions, 18 objective questions (level 2), 6 more than one correct option, 5 match the columns questions and 11 subjective questions (level 2. The chapter has a total of  154 questions. Our DC Pandey Solutions will help you gain a solid understanding of the various concepts of the chapter and keep your concepts clear.

## DC Pandey Thermometry, Thermal Expansion and Kinetic Theory of Gases Solutions (Chapter 17)

Thermometry, Thermal Expansion and Kinetic Theory of Gases is one of the essential topics of DC Pandey Waves and Thermodynamics Book. Here you will learn about thermometers and the Celsius, Fahrenheit and Kelvin temperature scales. This chapter also teaches you about the constant volume gas thermometer, platinum resistance thermometer, mercury thermometer, radiation thermometer, thermocouple thermometer, Reaumer’s scale,  and the absolute temperature scale.

Here you will also learn about the quantity of heat, thermal expansion, linear expansion, volume expansion, the anomalous expansion of water, the concept of an ideal gas, gas laws. Some of the laws covered here include Boyle’s law, Charle’s Law, Gay Lussac’s Law, and Avogadro’s Law.

Chapter 17 also deals with the ideal gas equation and degree of freedom. Here you will learn about the degree of freedom of gas molecules, degree of freedom of monoatomic gas, degree of freedom of diatomic and linear polyatomic gas, degree of freedom of non-linear polyatomic gas, degree of freedom of a solid, and vibrational energy.

The chapter also covers internal energy of an ideal gas, the law of equipartition of energy, molar heat capacity and the kinetic theory of gases. This chapter explains in details concepts like why mercury is used in thermometers and why the reservoir which is present at the bottom of the thermometer is plunged in cold or hot objects.

This chapter comprises 3 introductory exercises with 25 questions, 43 subjective questions (level 1), 22 objective questions(level 1), 10 assertion and reason questions, 7 more than one correct option, 5 match the columns questions and 11 subjective questions (level 2). This chapter comprises a total of 123 questions. Our Solutions to these questions are prepared in an easy to understand language so that you can master complex topics easily.

## DC Pandey Laws of Thermodynamics Solutions (Chapter 18)

Laws of Thermodynamics is one of the fascinating chapters of DC Pandey Waves and Thermodynamics. The chapter introduces you to the first law of thermodynamics, further explanation of the three terms used in the first law, different thermodynamic processes, efficiency of a cycle, heat engines, refrigerator, zeroth law of thermodynamics, the second law of thermodynamics, reversible and irreversible processes. Here you will learn about classical thermodynamics, statistical thermodynamics, pure component thermodynamics and solution thermodynamics.

Different types of energies are discussed in the chapter, which are internal energy, Helmholtz free energy, Enthalpy and Gibbs free energy. Here you will learn about different thermodynamics processes such as isothermal process, adiabatic process, isobaric process, and isochoric processes. Laws of Thermodynamics chapter also teaches you about various types of heat engines such as external combustion engine, internal combustion engine, Carnot engine, otto or petrol engine, and diesel engine.

This chapter comprises 3 introductory exercises with 17 questions, 23 subjective questions (level 1), 53 objective questions(level 1), 10 assertion and reason questions, 5 match the columns questions and 16 subjective questions (level 2). This chapter comprises a total of 124 questions. Our DC Pandey Waves and Thermodynamics Solutions to the exercise questions are phrased in an easy and simple language. They cover all concepts of the chapter exhaustively to help you develop a strong conceptual foundation and crack various competitive exams.

## DC Pandey Calorimetry and Heat Transfer Solutions (Chapter 19)

Calorimetry and Heat Transfer is one of the predominant chapters of DC Pandey Waves and Thermodynamics Solutions. This chapter will teach you about the specific heat, phase changes, latent heat and heat transfer. Different types of calorimeters are discussed in the chapter, which are adiabatic Calorimeters, Reaction Calorimeters, Bomb Calorimeters (Constant Volume Calorimetry), Constant Pressure Calorimetry and Differential Scanning Calorimeters. This chapter also teaches you about latent heat of vaporization, and latent heat of fusion.

The chapter makes you understand why electromagnetic waves are used in radiation to transfer energy. The heat transfer will be elucidated with the help of conduction, convection and radiation. Here you will also learn about Kirchhoff’s law, Newton’s law of cooling, and Wien’s displacement law.

Further, the chapter introduces you to electromagnetic waves, electromagnetic spectrum, applications of electromagnetic waves, the intensity of an electromagnetic wave, speed of electromagnetic waves in free space, the mathematical representation of electromagnetic wave and graphical representation of electromagnetic wave.

This chapter comprises  2 introductory exercises with 13, 14 subjective questions (level 1), 19 objective questions(level 1), 10 assertion and reason questions, 5 more than one correct option, 5 match the columns questions and 13 subjective questions (level 2). This chapter has a total of 79 questions.

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