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splitting of white light into 7 different colors is called dispersion...
• the speed of light is constant in vacuum for all colours, but it depends on the wavelength of light when it passes through a medium.
• we know Refractive Index of a medium depends on wavelength of light.
• when white light passes through a medium, each colour select its least time pass and we have refraction of different colours, producing spectrum.
• the results in separation of colours producing a spectrum.
• it has been experimentally found that refractive index decreases with an increase in wavelength.
• in VIBGYOR, red colour has longest wavelength and violet colour has shortest wavelength. refractive index of red colour is low, hence it suffers low deviation...
• the speed of light is constant in vacuum for all colours, but it depends on the wavelength of light when it passes through a medium.
• we know Refractive Index of a medium depends on wavelength of light.
• when white light passes through a medium, each colour select its least time pass and we have refraction of different colours, producing spectrum.
• the results in separation of colours producing a spectrum.
• it has been experimentally found that refractive index decreases with an increase in wavelength.
• in VIBGYOR, red colour has longest wavelength and violet colour has shortest wavelength. refractive index of red colour is low, hence it suffers low deviation...
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