CBSE Class 12 Physics Optical Instrument Theory and Examples

Read and download free pdf of CBSE Class 12 Physics Optical Instrument Theory and Examples. Students and teachers of Class 12 Physics can get free advanced study material, revision notes, sure shot questions and answers for Class 12 Physics prepared as per the latest syllabus and examination guidelines in your school. Class 12 students should download this study material which will give them more knowledge for all chapters in Physics and all important topics which are scoring and can get you more marks. Students should also download free pdf of Chapter wise Notes for Class 12 Physics prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this year and also download free worksheets and question papers available here to get higher scores in school exams and tests, also click here for more Study Material for Class 12 Physics

Study Material for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments

Class 12 Physics students should refer to the following Pdf for Chapter 9 Ray Optics and Optical Instruments in Class 12. These notes and test paper with questions and answers for Class 12 Physics will be very useful for exams and help you to score good marks

Class 12 Physics Chapter 9 Ray Optics and Optical Instruments

 

CBSE Class 12 Physics Optical Instrument Theory and Examples. Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks.

1. INTRODUCTION
1.1 Definition
Optical instruments are used primarily to assist the eye in viewing an object.
1.2 Types of Instruments
Depending upon the use , optical instruments can be categorised in the following way :

class_12_physics_useful_0431

2. FILM OR SLIDE PROJECTOR
It projects real, inverted and magnified image of an object, when the object is placed between F & 2F and screen between 2F and ∞ .

2.1 Magnification :
If the sides of slide are a and b and magnification of projection lens is m , each side will become m times so that the area of image formed. Ai = ma x mb = m2 ab = m2A0

2.2 Intensity :
As area of image becomes m2 times that of object, the intensity of image will become 1/m2 times that of object, as

IA0 = Ii Ai = Ii m2 A0  Ii = ( I/ m2)

Ex.1 A slide projector lens has a focal length 10 cm. It throws an image of a 2cm x 2 cm slide on a screen 5 m from the lens. Find (a) the size of the picture on the screen and (b) the ratio of illumination of the slide and the picture on the screen.
Sol. (a) As here f = 10 cm and v = 5m = 500 cm

class_12_physics_useful_0432

i.e. intensity in picture on the screen will be [1/(49x49)] times lesser than that on the slide. This is why in case of projector for observing image on a screen the source of light must be very powerful and the room dark.

class_12_physics_useful_0433

3. CAMERA
Camera is of two types viz. pin hole camera and lens camera.

3.1 Pinhole Camera :
It is based on recti linear propagation of light and forms real, inverted image on the screen.

class_12_physics_useful_0434

Note :
The image formed on the screen is neither a shadow ( as it is not dark) nor a true image ( as the rays do not intersect each other and can not be seen as an aerial image in absence of screen.

class_12_physics_useful_0435

In it a converging lens whose aperture anddistance from the film can be adjusted is used. Usually object is real and between ∞ and 2F;so the image is real, inverted, diminished and between F and 2F.

(A) Exposure :
For a particular film, a definite amount of light energy must i.e. incident on the film for proper exposure. i.e., I x S x t = constant where, I = intensity of light, S = area of aperture of lens and t is the exposure time. i.e. ID2 t = constant where D = aperture

(B) f- number:
It is the ratio of focal length to the aperture of lens. i.e. f - no. = f/D

Camera

Ex.2 A pinhole camera with 75 mm high film is to be used to take a picture of a 10 m high tree. The film is 150 mm from the pinhole. How far should the camera be from the tree to include the full height of the tree?
Sol. In case of pinhole camera

class_12_physics_useful_0436

4. MICROSCOPE
It is an optical instrument used to increase the visual angle of near objects which are too small to be seen by naked eye. Microscopes are of two types viz. simple microscope and compound microscope.

4.1 Simple Microscope :
It is also known as magnifying glass or magnifier and consists of a convergent lens with object between its focus and optical centre and eye close to it. The image formed by it is erect, virtual, enlarged and on same side of lens between object and infinity.

class_12_physics_useful_0437

Please click on below link to download pdf file for CBSE Class 12 Physics Optical Instrument Theory and Examples.

 

Chapter 14 Semiconductor Electronics Materials Devices and Simple Circuits
CBSE Class 12 Physics Semi Conductor Devices Concept Map
z Important Useful Resources for Class 12 Physics
CBSE Class 12 Physics All Chapters Important Questions
CBSE Class 12 Physics Calorimetry Solved Examples
CBSE Class 12 Physics Calorimetry Theory and Examples
CBSE Class 12 Physics Capacitance Solved Examples
CBSE Class 12 Physics Capacitance Theory and Examples
CBSE Class 12 Physics Centre of Mass Advanced Assignment.
CBSE Class 12 Physics Centre of Mass Assignment
CBSE Class 12 Physics Centre of Mass Basic Level Assignment
CBSE Class 12 Physics Centre of Mass Exam Notes
CBSE Class 12 Physics Centre of Mass Objective Questions
CBSE Class 12 Physics Centre of Mass Solved Examples
CBSE Class 12 Physics Conduction Solved Examples
CBSE Class 12 Physics Conduction Theory and Examples
CBSE Class 12 Physics Diffraction and Polarisation of light Solved Examples
CBSE Class 12 Physics Diffraction and Polarisation of light Theory
CBSE Class 12 Physics Doppler Effect Solved Examples
CBSE Class 12 Physics Doppler Effect Theory and Examples
CBSE Class 12 Physics Electronic Devices chapter notes and important questions
CBSE Class 12 Physics Electronic Devices Frequently Asked Questions
CBSE Class 12 Physics Formula Booklet
CBSE Class 12 Physics Heat and Thermodynamics Advanced Problems
CBSE Class 12 Physics Heat and Thermodynamics Assignment
CBSE Class 12 Physics Heat and Thermodynamics Basic Problems
CBSE Class 12 Physics Heat and Thermodynamics Exam Notes
CBSE Class 12 Physics Heat and Thermodynamics Objective Questions
CBSE Class 12 Physics Heat and Thermodynamics Solved Examples
CBSE Class 12 Physics Important Formulae All Chapters
CBSE Class 12 Physics Important Questions from Past Exams
CBSE Class 12 Physics Interference of Light Solved Examples
CBSE Class 12 Physics Interference of Light Theory and Examples
CBSE Class 12 Physics Modern Physics Advanced Problems
CBSE Class 12 Physics Modern Physics Assignment
CBSE Class 12 Physics Modern Physics Basic Problems
CBSE Class 12 Physics Modern Physics Exam Notes
CBSE Class 12 Physics Modern Physics Objective Questions
CBSE Class 12 Physics Modern Physics Solved Examples
CBSE Class 12 Physics Past Year Important Questions
CBSE Class 12 Physics Practical Questions
CBSE Class 12 Physics Prism Deviation and Disprtion Solved Examples
CBSE Class 12 Physics Prism Deviation and Disprtion Theory and Examples
CBSE Class 12 Physics Radiation Solved Examples
CBSE Class 12 Physics Radiation Theory and Examples
CBSE Class 12 Physics Reflection from Curved Surface Solved Examples
CBSE Class 12 Physics Reflection from Curved Surface Theory and Examples
CBSE Class 12 Physics Reflection from Plane Surfaces Solved Examples
CBSE Class 12 Physics Reflection from Plane Surfaces Theory and Examples
CBSE Class 12 Physics Refraction at Curved Surface Solved Examples
CBSE Class 12 Physics Refraction at Curved Surface Theory and Examples
CBSE Class 12 Physics Refraction at Plane Surface Solved Examples
CBSE Class 12 Physics Refraction at Plane Surface Theory and Examples
CBSE Class 12 Physics Revision Questions Cummunication
CBSE Class 12 Physics Rotational Motion Advanced Problems
CBSE Class 12 Physics Rotational Motion Assignment
CBSE Class 12 Physics Rotational Motion Basic Problems
CBSE Class 12 Physics Rotational Motion Exam Notes
CBSE Class 12 Physics Rotational Motion Objective Questions
CBSE Class 12 Physics Rotational Motion Solved Examples
CBSE Class 12 Physics Simple Harmonic Motion Advanced Problems
CBSE Class 12 Physics Simple Harmonic Motion Assignment
CBSE Class 12 Physics Simple Harmonic Motion Basic Problems
CBSE Class 12 Physics Simple Harmonic Motion Exam Notes
CBSE Class 12 Physics Simple Harmonic Motion Objective Questions
CBSE Class 12 Physics Simple Harmonic Motion Solved Examples
CBSE Class 12 Physics Solids and Fluids Advanced Problems
CBSE Class 12 Physics Solids and Fluids Assignment
CBSE Class 12 Physics Solids and Fluids Basic Problems
CBSE Class 12 Physics Solids and Fluids Exam Notes
CBSE Class 12 Physics Solids and Fluids Objective Questions
CBSE Class 12 Physics Solids and Fluids Solved Problems
CBSE Class 12 Physics Thermal Expansion Solved Examples
CBSE Class 12 Physics Thermal Expansion Theory and Examples

More Study Material

CBSE Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Study Material

We hope students liked the above Study Material for Chapter 9 Ray Optics and Optical Instruments designed as per the latest syllabus for Class 12 Physics released by CBSE. Students of Class 12 should download the Study Material in Pdf format, read the notes and related questions and solutions given in above Class 12 Physics Study Material on daily basis. All latest Study Material have been developed for Physics by referring to the most important and regularly asked topics which the students should learn and practice to get better score in school tests and examinations. Studiestoday is the best portal for Class 12 students to get all latest study material free of cost.

Study Material for Physics CBSE Class 12 Chapter 9 Ray Optics and Optical Instruments

Expert teachers of studiestoday have referred to NCERT book for Class 12 Physics to develop the Physics Class 12 Study Material. If you download Study Material for the above chapter daily, you will get higher and better marks in Class 12 test and exams in the current year as you will be able to have stronger understanding of all concepts. Daily reading of Physics study material will help students to have stronger understanding of all concepts and also make them expert on all critical topics. You can easily download and save all Study Material for Class 12 Physics also from www.studiestoday.com without paying anything in Pdf format. After solving the questions given in the Study Material which have been developed as per latest course books also refer to the NCERT solutions for Class 12 Physics designed by our teachers

Chapter 9 Ray Optics and Optical Instruments Study Material Physics CBSE Class 12

All Study Material given above for Class 12 Physics have been made as per the latest syllabus and books issued for the current academic year. The students of Class 12 can refer to the answers which have been also provided by our teachers for all Study Material of Physics so that you are able to solve the questions and then compare your answers with the solutions provided by us. We have also provided lot of MCQ questions for Class 12 Physics so that you can solve questions relating to all topics given in each chapter. Also download Class 12 Physics Sample Papers given on studiestoday.

Chapter 9 Ray Optics and Optical Instruments CBSE Class 12 Study Material Physics

Regular Study Material reading helps to gain more comprehensive understanding of Chapter 9 Ray Optics and Optical Instruments concepts. Study Material play an important role in developing understanding of Chapter 9 Ray Optics and Optical Instruments in CBSE Class 12. Students can download and save or print all the Study Material, printable assignments, practice sheets of the above chapter in Class 12 Physics in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 12 Physics MCQ Test for the same chapter

CBSE Study Material Physics Class 12 Chapter 9 Ray Optics and Optical Instruments

CBSE Class 12 Physics best textbooks have been used for writing the problems given in the above Study Material. If you have tests coming up then you should revise all concepts relating to Chapter 9 Ray Optics and Optical Instruments and then take out print of the above Study Material and attempt all problems. We have also provided a lot of other Study Material for Class 12 Physics which you can use to further make yourself better in Physics.

How to download CBSE Class 12 Physics Chapter 9 Ray Optics and Optical Instruments study material

You can download free study material for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments for latest academic session from StudiesToday.com

Can I download study material for Chapter 9 Ray Optics and Optical Instruments Class 12 Physics in Pdf format

Yes, you can click on the link above and download PDFs for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments easily for regular use

Is the study material for Chapter 9 Ray Optics and Optical Instruments Class 12 Physics for the latest CBSE academic session

Yes, the study material given here for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments is for current CBSE session

Can I download Chapter 9 Ray Optics and Optical Instruments Class 12 Physics study notes in pdf

You, just click the link above and save Class 12 study material for Physics Chapter 9 Ray Optics and Optical Instruments in Pdf

Is there any charge for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments concepts and study material

All study maetrial for CBSE Class 12 Physics Chapter 9 Ray Optics and Optical Instruments is free

Tell me the best website to get study material for Chapter 9 Ray Optics and Optical Instruments Class 12 Physics

www.studiestoday.com is the best portal for Chapter 9 Ray Optics and Optical Instruments Physics Class 12 study material

How to get topic-wise study material for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments

Visit www.studiestoday.com for best study material for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments

How to print Chapter 9 Ray Optics and Optical Instruments Class 12 Physics study notes as per CBSE syllabus

All study material for various topics of Class 12 Physics Chapter 9 Ray Optics and Optical Instruments as per latest CBSE syllabus is avaiable here