more on refraction

more on refraction

1. occurs coz of difference in speed of the light waves

   • amount of refraction - depends- speed of waves in each substance

2. refraction equation

   • with diff speed
   • with two refractive substances

3. refractive index

4. during refraction

   • speed and wavelength change but freq remain constant

5. white light spectrum

   • white light composed of light with continous range of wavelengths
     • glass refracts light by diff amounts, depending on its wavelength
       • so each colour refracted by diff amount

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