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SAI INTERNATIONAL SCHOOL
                                                          Class8
                                                     Lesson notes
                                                   Subject-Physics
                                                        CH- Light
                                                Subtopic- Dispersion


                      Dispersion:
                       Splitting of white light into seven constituent colors after passing through a prism
                       is called dispersion.
                      Cause: Speed of light changes when it enters a optically denser medium.
                      The change in speed depends on the wavelength of the light.
                      Spectrum: The band of seven colors obtained after dispersion is called spectrum.




                                      Dispersion of White light through glass prism.
































               Suggested Activity
               NCERT Textbook activity 16.7
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