Snells Law
Snells Law
This law say that the ratio of sine of angle of incidence to the sine of angle of refraction is constant for a pair of media i.e
.
where is the refractive index of the medium 2 w.r.t. medium 1.
Application of Snell's Law:
Ray Falling Perpendicular to Surface:
The ray which falls perpendicular to the refracting surface goes into the second medium undeviated.. This phenomenon can be explainer with the help of Snell's law. As the ray is falling perpendicularly so the angle of incidence is 0
From Snell's law we get
Now
So
As the angle of refraction is 0 so the ray goes without deviation.
Optically Denser and Rarer Medium:
In the pair of transparent medium, the medium that has a higher refractive index is called a denser medium and the other is called a rarer medium.
When light passes from rarer to denser medium it slows down and bends toward the normal as shown in the figure R denotes rarer medium and D denotes denser medium.
Using Snells law:
As the ray is moving from optically rarer medium to optically denser medium so
Angles are inversely proportional to refractive index, we get
Hence light bends towards the normal
When light passes from denser to rarer medium the speed increases and it bends away from the normal as shown in the figure R denotes rarer medium and D denotes denser medium.
Using Snells law:
As the ray is moving from optically denser medium to optically rarer medium so
Angles are inversely proportional to refractive index, we get
Hence light bends away from the normal
Students / Parents Reviews [10]
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
