Question
Download Solution PDFThe coloured light that refracts most while passing through a prism is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
Dispersion of light:
- Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours on passing through a prism.
- The band of seven colours so obtained is called the (visible) spectrum.
- The dispersion of white light occurs because the colours of white light travel at different speeds through the glass prism.
EXPLANATION:
- As we know, bending of light is inversely proportional to the wavelength of the light.
\(Bending\;\alpha \;\frac{1}{{Wavelength}}\)
- Different colours bend differently on passing through a prism and the bending of colour depends on wavelength.
- Higher wavelengths bend less, whereas shorter wavelength bend more.
- Out of all violet has the least wavelength and hence it bends the most and red has the highest wavelength, so it bends the least. Therefore option 2 is correct.
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