Hi Login
Study Materials:
CBSE NOTES ⇒ Class 10th ⇒ Science ⇒ 10. Light-Reflection and Refraction

10. Light-Reflection and Refraction

Refraction of light


Chapter 10. Light-Reflection and Refraction


Refraction of light: 

When a ray of light enters from one transparent medium to another transparent medium it changes its direction or it bends. This bending of light path is called refraction of light. 

The refraction of light only takes place through transparent materials like glass, air and water etc. 

There are two situation of this bending.

(i) When a ray of light enters from rarer medium to denser medium it bends towards the normal. 

(ii) When a ray of light enters from denser medium to rarer medium it bends away from normal. 

Cause of the refraction of light: The refraction of light occurs due to changing in speed of light it enter on transparent medium to another.  

The Law of refraction: 

The following are the laws of refraction of light:

(i) The incident ray, the refracted ray and the normal to the interface of two transparent media at the point of incidence, all lie in the same plane.

(ii) The ratio of sine of angle of incidence to the sine of angle of refraction is a constant, for the light of a given colour and for the given pair of media. This law is also known as Snell’s law of refraction.

Snell's Law: The ratio of sine of angle of incidence to the sine of angle of refraction is a constant, for the light of a given colour and for the given pair of media. This law is also known as Snell’s law of refraction.

Denser Medium: The medium which has greater refractive index is called dender medium. The particles of this medium is denser.

Rarer Medium: The medium which has smaller refractive index is called rarer medium. 

 

Other Pages of this Chapter:

Select Your CBSE Classes

Important Study materials for classes 06, 07, 08,09,10, 11 and 12. Like CBSE Notes, Notes for Science, Notes for maths, Notes for Social Science, Notes for Accountancy, Notes for Economics, Notes for political Science, Noes for History, Notes For Bussiness Study, Physical Educations, Sample Papers, Test Papers, Mock Test Papers, Support Materials and Books.

 

 

Mathematics Class - 11th

NCERT Maths book for CBSE Students.

books

Study Materials List:

CBSE NOTES ⇒ Class 10th ⇒ Science
1. Chemical Reactions and Equations
2. Acids, Bases and Salts
3. Metals and Non-metals
4. Carbon and its Compounds
5. Periodic Classification of Elements
6. Life Processes
7. Control and Coordination
8. How do Organisms Reproduce
9. Heredity and Evolution
10. Light-Reflection and Refraction
11. Human Eye and Colourful World
12. Electricity
13. Magnetic Effects of Electric Current
14. Sources of Energy
15. Our Environment
16. Management of Natural Resources

Sidebar items

New Books