OSWAAL BOOKS NEW EDITION NCERT SOLUTIONS TEXTBOOK+EXEMPLAR CHAPTERWISE & TOPICWISE New NCERT Textbook (Edition 2018-19) Exercises with Solutions New NCERT Exemplar (Edition 2018-19) Problems with Solutions CLASS 11 PHYSICS Includes : WITH l Previous Years' Questions MIND l Mind Maps MAPS l QR Codes for Informative Videos OSWAAL BOOKS Disclaimer : 1/11, Sahitya Kunj, M.G. Road, Oswaal Books has exercised due care and caution in collecting Agra - 282002 (UP) India the data before publishing this book. Inspite of this if any omission, inaccuracy or printing error occurs with regards to the 0562-2857671, 2527781 data contained in this book, Oswaal books will not be held responsible or liable. Oswaal Books will be grateful if you could [email protected] point out any such error or your suggestions which will be of www.OswaalBooks.com great help for other readers. 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Ltd., (033) 22419071, 9830257999 KOZHIKODE T.B.S. Publishers & Distributors, (0495) 2720025, 2720085 Oriental Publishers & Distributor (033) 22191591 PALARIVATTOM H & C Store, (0484) 2344337 Saha Book House, (033) 22193671 TRIVANDRUM H & C Store, (0471) 2572010, 9446411996 SILIGURI Agarwal Book House, (0353) 2535274 2 © Publisher : Oswaal Books Printed at Parshwnath Printers Unit, Agra 13 0 CONTENTS l Mind Maps 9 - 24 1. Physical World 1 – 6 9. Mechanical Properties of Solids 181 – 201 Topic 1 : Physical Science Topic 1 : Elastic Behaviour of Solids Topic 2 : Physical Laws : Nature and Forces Topic 2 : Modulus of Elasticity 2. Units and Measurement 7 – 25 10. Mechanical Properties of Fluids 202 – 221 Topic 1 : Units System and Measurement Topic 1 : Fluids at Rest Topic 2 : Dimensional Analysis and Error Topic 2 : Surface Energy and Surface Tension Topic 3 : Viscosity and Bernoulli's Theorem 3. Motion in a Straight Line 26 – 49 Topic 1 : Motion and Velocity 11. Thermal Properties of Matter 222 – 240 Topic 2 : Uniformly Accelerated Motion Topic 1 : Thermal Expansion & Heat Capacities 4. Motion in a Plane 50 – 75 Topic 2 : Heat Transfer Topic 1 : Scalar and Vector quantities Topic 2 : Projectile Motion 12. Thermodynamics 241 – 257 Topic 1 : Zeroth Law, Heat and First Law 5. Laws of Motion 76 – 105 Topic 2 : Second Law of Thermodynamicss Topic 1 : Newton's Laws of Motion Topic 2 : Friction & Dynamics of Circular 13. Kinetic Theory 258 – 274 Motion Topic 1 : Equation of State and Kinetic Theory of Gases 6. Work, Energy and Power 106 – 130 Topic 2 : Law of Equi-partition of Energy Topic 1 : Work and Power and Brownian Motion Topic 2 : Energy and Collision 14. Oscillations 275 – 297 7. System of Particles and Rotational Topic 1 : Periodic Functions and Simple Motion 131 – 157 Harmonic Motion (S.H.M.) Topic 1 : Centre of Mass and Motion of Topic 2 : Energy in S.H.M, Forced and Damped Rotational Particles Oscillations Topic 2 : Moment of Inertia and Radius of 15. Waves 298 – 319 Gyration Topic 1 : Waves & Wave Motion 8. Gravitation 158 – 180 Topic 2 : Superposition Principle and Topic 1 : Kepler's Laws, Universal Law of Doppler effect Gravitation, Acceleration Due to Gravity qq Topic 2 : Gravitational Potential Energy and Satellites ( 3 ) PREFACE In order to maintain a Uniform Education System across the country, many State Boards are implementing a Single Curriculum System via National Council of Educational Research & Training (NCERT). In the best interest of Secondary and Senior Secondary students, the Department of Education in Science & Mathematics (DESM) and NCERT have together developed Exemplar Problems in Science & Mathematics. These include practice questions of various typologies and difficulty levels which aid in in depth learning of concepts. They also contain conceptual problems which are a part of the CBSE Board Syllabus as well as the Syllabus of various Competitive Exams like IIT JEE, NEET, AIIMS, etc. Considering the diversity and the varied difficulty level of questions in these two subjects, we, at Oswaal Books have launched OSWAAL NCERT SOLUTIONS. They are a compilation of all the Questions of the Latest Editions of NCERT Textbook & NCERT Exemplar in a Chapter-wise & Topic-wise format along with their complete solutions. These also include Previous Years' Examination Questions fully solved with their respective sources. We believe that OSWAAL NCERT SOLUTIONS will help the students in school and after school in practicing and preparing extensively for both, Final Examinations as well as Competitive Examinations with utmost confidence! Some Special Features of Oswaal NCERT Solutions are: l Chapter-wise &Topic-wise presentation l Chapter Objectives : A sneak peek into the chapter l Mind Map : A single page snapshot of the entire chapter l Quick Review : Concept-based study material l Tips & Tricks : Useful guidelines for attempting each question perfectly l Some Commonly Made Errors : Most common and unidentified errors made by students discussed l Expert Advice : Oswaal Expert Advice on how to score more! l Oswaal QR Codes : For Quick Revision on your Mobile Phones & Tablets We hope that OSWAAL NCERT SOLUTIONS will help you at every step as you move closer to your educational goals. We wish you all great success ahead!! All the Best ! TEAM OSWAAL ( 4 ) BBBBeeee HHHHaaaappppppppyyyy ---- IIIItttt''''ssss aaaallllllll tttthhhhaaaatttt mmmmaaaatttttttteeeerrrrssss !!!!!!!! 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As another Exam Tool, Oswaal Books teaches you how to give every Question your best shot and write the PERFECT ANSWER everytime!! 1 STEP l Student should write the data/information as given in the question carefully 2 STEP l Student should write the concept/formula which is applicable in the given question l If the question asked is related to a particular law/phenomena, then the student should write the name of that law/phenomena carefully 3 S TEP l Check the nature of the question – If the question is based on a Theoretical Concept : Ø After writing all the details given in the question, the student should be able to identify the concept applicable in the question Ø The student should then explain all the required points as asked in given question If the question is based on a Numerical : Ø Using the required Formula, the student should insert the particular data/values which are given/assumed Ø Then the numerical can be solved to get the final answer Whee waor uf rlodm lo yvoeu t o! We believe that this book will make your Learning Simple. There are a lot of ways in which you can share your thoughts and experiences about this book with millions of current and future students. Here is how— F You can log on to Amazon.in, search for this F You can also share it on our Facebook Page book and write a Review. F You can search for Oswaal Books on Google and F You can email us your suggestions / feedback write a Review there. on [email protected] ( 6 ) POSITIVE AFFIRMATIONS POSITIVE AFFIRMATIONS Our mind starts believing what we repeatedly think or say. We, at Oswaal Books resonate with this belief. So, we want all our readers to create their own affirma�ons ! A posi�ve affirma�on is something spoken aloud that you want to believe or want to be true. Repea�ng posi�ve affirma�ons daily can help shi� your internal dialogue from nega�ve to posi�ve. So lets get started ! 1. I enjoy the subject I am studying. 2. During exams, I recall informa�on quickly and easily. 3. Ge�ng good grades is natural for me. 4. ............................................................................................................................................... 5. ............................................................................................................................................... 6. ............................................................................................................................................... 7. ............................................................................................................................................... 8. ............................................................................................................................................... 9. ............................................................................................................................................... 10. ............................................................................................................................................... 11. ............................................................................................................................................... 12. ............................................................................................................................................... 13. ............................................................................................................................................... 14. ............................................................................................................................................... 15. ............................................................................................................................................... 16. ............................................................................................................................................... 17. ............................................................................................................................................... 18. ............................................................................................................................................... 19. ............................................................................................................................................... 20. ............................................................................................................................................... ( 7 ) ( 8 ) MIND MAPS | 9 y h earning made simple Chapter - 1 -16 Very short range, strongest force• Very short range (10 m ) weak force• Attractive in nature•Not weak as gravitational force but much • -15 Range – 10 m• weaker than the strong nuclear force and Strongest among all fundamental forces. • electromagnetic forces. Fundamental Forces of NatureTechnology gives rise to new physics; similarlphysics gives rise to new technologies. Physical World ScClassical Physics deals with macroscopic ope andStudy of the basic laws of nature Excitemenphenomenon and includes subject like t of Pand manifestation in different hysicsMechanics, Electrodynamics, Optics and natural phenomenonThermodynamics. Quantum Physics deals witmicroscopic phenomena at the minute scales of atoms, molecules and nucleus. Principal Thrust To derive the properties of bigger and more nomena complex system from the properties of its ws.constituent into simpler parts. : l sical phepts and la p hyce pn Mind ma Force between the charged particles• Both attractive and repulsive•36It is 10 times stronger than gravitational force • between two protons, for any fixed distance. Force of mutual attraction between any two • objects by virtue of their masses Plays a key role in large scale.•The phenomena of the universe, such as • formation of and evolution of stars, galaxies and galactic clusters are by gravitational force governed. Any subject is said to be science when• it is studied in sequence pattern. The experimenting, exploring and predicting from what we see around us. Systematic observations, controlled experiments, qualitative and quantitativereasoning, mathematical modelling, prediction and verification or falsification of theories. To explain diverse in terms of co