What is optical density? Explain with examples. Can u write/provide some extra questions related to refraction.will any definition will come out of the book. If any then teacher please tell that definition. Also numerical will come similar to that of ncert book,thankyou for clearing this doubt.

Asked by Monika Singh | 28th Feb, 2015, 10:54: PM

Expert Answer:

Optical density of a transparent medium is the measure of its refractive index. The optical density is high for a medium having relatively high value for its refractive index. The optical density is low for a medium with low value for its refractive index. The more optically dense a medium is, the slower a wave will move through the medium.
Optical density or index of refraction is lowest in vacuum (its 1) and that of water is 1.33. 

You can register and log on to our website www.topperlearning.com for extra questions related to refraction.You can also get a lot of practice tests and also a good set of sample as well as past year papers.

Generally in exams definitions does not come from outside the syllabus of the chapters. Study the definitions provided in the text book thoroughly. Numericals are asked on the basis of the concepts that you have learned in the chapter. So clear the concepts and practice as much of numericals you can. 

Answered by Jyothi Nair | 1st Mar, 2015, 06:35: PM