NCERT Solutions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments provided here is extremely helpful in revising complete syllabus and getting a strong base on it. NCERT 12th Class Physics Ray Optics and Optical Instruments all questions are solved with detailed explanation available for students. In this article we had given of NCERT solutions for Ray Optics and Optical Instruments Class 12 Physics step by step solution for each and every question of the chapter. These solutions will also help you with your homework. Best teachers across the India created NCERT solutions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments according to curriculum and pattern of syllabus as per guidelines of NCERT (CBSE) Books.
12th Class NCERT Physics Chapter 9 Ray Optics and Optical Instruments
| Name of Organization | NCERT |
| Name of Class | 12th Class |
| Name of Subject | Physics |
| Name of Chapter | Chapter 9 |
| Name of Content | Ray Optics and Optical Instruments |
| Name of Category | NCERT Solutions |
| Official site | http://ncert.nic.in/ |
Chapter 9 Ray Optics and Optical Instruments covers numerous Questions and answers from all topics and sub-topics which are given below
| Section Name | Topic Name |
| 9 | Ray Optics and Optical Instruments |
| 9.1 | Introduction |
| 9.2 | Reflection of Light by Spherical Mirrors |
| 9.3 | Refraction |
| 9.4 | Total Internal Reflection |
| 9.5 | Refraction at Spherical Surfaces and by Lenses |
| 9.6 | Refraction through a Prism |
| 9.7 | Dispersion by a Prism |
| 9.8 | Some Natural Phenomena due to Sunlight |
| 9.9 | Optical Instruments |
Question 9.1:
A small candle, 2.5 cm in size is placed at 27 cm in front of a concave mirror of radius of curvature 36 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image.
If the candle is moved closer to the mirror, how would the screen have to be moved?
Answer
Size of the candle, h = 2.5 cm
Image size = h’
Object distance, u = −27 cm
Radius of curvature of the concave mirror, R = −36 cm
