Tuesday 28 November 2023

Physics Part-2 Class 12 NCERT

 

CHAPTER NINE

RAY OPTICS AND OPTICAL INSTRUMENTS


9.1 Introduction 309

9.2 Reflection of Light by Spherical Mirrors 310

9.3 Refraction 316

9.4 Total Internal Reflection 319

9.5 Refraction at Spherical Surfaces and by Lenses 323

9.6 Refraction through a Prism 330

9.7 Some Natural Phenomena due to Sunlight 332

9.8 Optical Instruments 335


CHAPTER TEN

WAVE OPTICS


10.1 Introduction 351

10.2 Huygens Principle 353

10.3 Refraction and Reflection of Plane Waves using Huygens Principle 355

10.4 Coherent and Incoherent Addition of Waves 360

10.5 Interference of Light Waves and Young’s Experiment 362

10.6 Diffraction 367

10.7 Polarisation 376


CHAPTER ELEVEN

DUAL NATURE OF RADIATION AND MATTER


11.1 Introduction 386

11.2 Electron Emission 387

11.3 Photoelectric Effect 388

11.4 Experimental Study of Photoelectric Effect 389

11.5 Photoelectric Effect and Wave Theory of Light 393

11.6 Einstein’s Photoelectric Equation: Energy Quantum of Radiation 393

11.7 Particle Nature of Light: The Photon 395

11.8 Wave Nature of Matter 398

11.9 Davisson and Germer Experiment 403


CHAPTER TWELVE

ATOMS


12.1 Introduction 414

12.2 Alpha-particle Scattering and Rutherford’s Nuclear Model of Atom 415

12.3 Atomic Spectra 420

12.4 Bohr Model of the Hydrogen Atom 422

12.5 The Line Spectra of the Hydrogen Atom 428

12.6 DE Broglie’s Explanation of Bohr’s Second Postulate of Quantisation 430


CHAPTER THIRTEEN

NUCLEI


13.1 Introduction 438

13.2 Atomic Masses and Composition of Nucleus 438

13.3 Size of the Nucleus 441

13.4 Mass-Energy and Nuclear Binding Energy 442

13.5 Nuclear Force 445

13.6 Radioactivity 446

13.7 Nuclear Energy 451


CHAPTER FOURTEEN

SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS


14.1 Introduction 467

14.2 Classification of Metals, Conductors and Semiconductors 468

14.3 Intrinsic Semiconductor 472

14.4 Extrinsic Semiconductor 474

14.5 p-n Junction 478

14.6 Semiconductor Diode 479

14.7 Application of Junction Diode as a Rectifier 483

14.8 Special Purpose p-n Junction Diodes 485

14.9 Digital Electronics and Logic Gates 490

ANSWERS 502

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