Laws of Refraction
Laws of Refraction
The way a ray of light refracts when it is incident on the surface separating two media depends not only on the refractive indices of the media but also on the angle of incidence.
In the given figure there are two mediums : Air and Water. Let their refractive indices be and
respectively. The two media can be any pair such as air and water, or air and glass. Suppose a ray of light called as incident ray traveling in medium air, is incident on the surface of water body . Draw a normal to the surface at the point of incidence of incident ray.
The formed between the incident ray and the normal is called the angle of incidence
.
The between the refracted ray and the normal is called the angle of refraction
.
The ray of light inside the medium is called as refracted ray.
Laws Of Refraction:
Two laws of refraction governs the refraction that takes place at a surface of separation.
1. The incident ray, the normal and the refracted ray to the refracting surface at the point of incidence lie in the same plane.
2. The angle of incidence and the angle of refraction satisfy the equation
The second law given above is also called Snells law.
Illustration: A ray of light traveling in air falls on the surface of a material. The ray makes an angle of 450 with the normal to the surface. Find the angle made by the refracted ray with the normal in the material. Refractive index of the material is .
Solution: Since the ray makes angle of 450 with the normal, So angle of incidence is
The ray is traveling in air and the refractive index of air is 1
The angle between the refracted ray and the normal is called the ____________________ .
| |||
| Right Option : A | |||
| View Explanation | |||
In the speed of light is slower in medium B then in medium A ,Then which of the following statement is true ? | |||
| Right Option : B | |||
| View Explanation | |||
The angle of refraction is the angle that the __________makes with me _____ | |||
| Right Option : D | |||
| View Explanation |
Students / Parents Reviews [10]
Being 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 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
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
8thMy 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 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
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thA 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 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.
Hiya Gupta
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thOne 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.
