Physics Ray Optics and Optical Instruments

${\mu }_B=\frac{C}{v_B}$

$v_B=\frac{3*10^8}{1.47}=20.408*10^7$

$v_A=2.6*10^7+20.408*10^7=23*10^7$

${\mu }_B=\frac{C}{v_B}\&{\mu }_A=\frac{C}{v_A}$

= 1.127

$\approx 1.13$

Velocity of light in medium 2

$=\frac{1}{\sqrt[]{{\mu }_m{\in }_m}}$

$v_2=\frac{1}{\sqrt[]{{\mu }_0{\mu }_r{\in }_0{\in }_r}}$

$=\frac{1}{\sqrt[]{1*{\mu }_0{\in }_0*4}}$

$v_2=\frac{1}{2\sqrt[]{{\mu }_0{\in }_0}}$

By snell's law for total internal Reflection

${\mu }_{2}sin{\theta }_C>{\mu }_{1}sin90°$

${\theta }_c>30°$

Using snell's law –

sin I = $\mu sinr$

sin45° = $\mu sin30°$

$\mu$$=$$\frac{sin45}{sin30}$$=$$\frac{1}{\text{exception 25:}}$$*$$2$$=$√2

The Class 12 Physics Ch 10 Wave Optics includes a significant weightage in CBSE Class 12 Physics Exams which carries around 10 to 12 marks. Topics like Diffraction, Polarization, and Young's Double-Slit Experiment are oftenly asked in theory-based and numerical questions in CBSE Board exams and other competitive exams and therefore it is an important chapter for exams preparation. 

The NCERT Solutions PDFs for Class 12 Physics Chapter 10 Wave Optics provide step-by-step explanations, solved examples, and numerical problem-solving techniques which help students preparing for the CBSE Board exams and other competitive exams to clear their doubts. 

These Class 12 Physics NCERT Solution PDFs help students strengthen conceptual understanding, and develop problem-solving skills which can be beneficial for board exam preparation to understand the key concepts necessary to score well.

NCERT Class 12 Physics Ch 10 Wave Optics is important because it consists of fundamental concepts like Young's Double-Slit Experiment, Interference, Diffraction, Huygens' Principle, and Polarization. These concepts and topics are oftenly asked in CBSE Board Exams, JEE, NEET, and other entrance exams. Understanding this chapter allow students build a strong foundation in optical wave phenomena, which is important for students to learn and prepare for problem-solving and application-based questions in competitive exams. 

NCERT Solutions for Class 12 Physics Ch 9 Ray Optics consists of step-by-step explanations for all textbook questions, which maks it easier for students to comprehend difficult concepts and help develop problem-solving techniques. 

Class 12 Physics Ch 9 Ray Optics NCERT Solutions also help students clarify basic principles to improve conceptual clarity, and help students revise properly before exams. Since competitive exams like JEE and NEET include questions related to the Class 12 Physics NCERT Topics and concepts, these NCERT solutions PDFs are an excellent resource to thoroughly prepare for the exam.

The are various important topics often asked in the competitve exams an even in board exams related to the Class 12 Physics Ch 9 Ray Optics such as:

• Reflection of Light

• Refraction of Light

• Total Internal Reflection

• Lens Maker's Formula

• Power of a Lens

• Combination of Lenses

• Optical Instruments

• Huygens' Principle

These topics are important to understand the behavior of light and its applications in optical devices. Understand these concepts will help students answer questions related to theory and numerical problems in board and entrance exams.