Discussion
When white light passes through a prism, it splits into it's component colours. This phenomenon is called
Answer: D
The phenomenon is called Dispersion.
Dispersion is the splitting of white light into its component colours. It happens in a prism because the refractive index of glass is slightly different for each wavelength, so violet light is bent the most and red the least, and the colours fan out.
The spectrum is the band of colours (VIBGYOR) that dispersion produces, not the phenomenon itself. Refraction is the bending that causes it, but refraction alone does not imply splitting, and reflection plays no part.
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