Class 12 Physics Ch 9

Ray Optics and Optical Instruments Class 12 Physics Ch 9 Notes

 Class 12 Physics Ch 9 Revision Notes
 Class 12th Physics Notes for topper Recap Quick Revision notes pdf download  Physics wallah pdf notes  Ray Optics and Optical Instruments Solutions include optical instruments like microscopes, telescopes, and human eye. This chapter is super important for CBSE board exams, as questions from NCERT are often asked. It's also crucial for students preparing for college entrance exams like JEE and NEET. So, make sure to study this chapter thoroughly and understand all the concepts.CBSE Class XII Physics Solutions 

Ray Optics and Optical Instruments Class 12 Notes Chapter 9

 The NCERT Class 12 Physics CBSE Syllabus 2023-24 and its corresponding marking schemes. The NCERT PDF for Physics Class 12 is a valuable resource for comprehending the subject matter and taking notes during various examinations. 
Class 12 Physics NCERT Solutions Chapter 9 NCERT Solutions for Class 12 Physics include Ray Optics and Optical Instruments. NCERT Solutions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments are provided below.

1. Ray  Optics or Geometrical Optics 
In this optics, the light  is considered as a ray which travels in a  straight line through Mediums. It states  that for each and every object, there is an image

Light is a form of energy that travels in the form of electromagnetic waves, which does not necessarily repulsive, a medium to propagate.

Reflection of light & The Phenomena of change in path of Light as it Passes from one medium to another is Called Refraction of light.

Note: Refraction changes. occurs due to velocity 

2. Reflection Reflection is a phenomena where light's path is altered without any alteration to the medium.

3. Light Reflection After striking a surface, light is said to reflect when it returns to the same medium from which it originally came.

4. Reflection Laws
Following are two laws of reflection:
(i) The incidence angle I = R, or the angle of reflection is equal to i.
(ii) At the point of incidence, the incident ray, the reflected ray, and the normal to the reflecting surface all lie in the same plane.

5. The formula for the total number of images created by two plane mirrors that are at an angle from one another is

6. A hollow sphere contains the reflecting surface of a spherical mirror. Concave and convex spherical mirrors are the two types of spherical mirrors.

(1) first how of refraction states that the incident ray, refracted vay and Normal to plane, all Lie in a same plane-

(2). Second Law of refraction states that the ratio of sine of angle of incidence to she of angle of refraction is Constant for a given pair of media known as Refractive Index of that pair of meet, denoted by u. This is Called Snell's Law of refraction. i-e up is called refractive Index of medium b worth Medium a.

Refractive Index of a mediam & a measure of optical density or amount of bending of ray in the medium.

Absolute Refractive Index it is defined as the ratio of velocity of light in vacuum to the velocity of light in a medium. ie

7. Linear Magnification The ratio of the size of the image formed by a spherical mirror I to the size of the object O is called the linear magnification produced by the spherical mirror.

Importance of PW Class 12 Physics Revision Notes

Class 12 physics Ch 9 Ray Optics and Optical Instruments Solutions is an important study material for the Students who are presently studying in CBSE Board Class 12th standard. The NCERT Results for Class XIIth physics, give clear and precise answers  

The NCERT Solutions for Class 12 Physics Chapter 9 are curated by a group of PW experienced instructors who have extensive knowledge in the field. Students are urged to refer to the solutions PDF while addressing textbook questions to reinforce their fundamentals of Integral applications. To help Students understand topics, the questions are answered with pictorial representations. Aside from board exam preparation, students will be well-prepared to take a variety of competitive tests

Post a Comment


  1. Please provide the handwritten notes of ch - ray optics.