- Dispersion is the splitting of white light into its constituent colours when it passes through a prism. - This occurs because the refractive index of the prism material is different for different wavelengths (colours) of light; this phenomenon is called refraction. - The deviation angle for a given colour depends on the refractive index for that colour. - Violet light has the shortest wavelength and the highest refractive index in glass, causing it to bend the most. - Red light has the longest wavelength and the lowest refractive index in glass, causing it to bend the least.
A glass prism splits white light into different colours. This phenomenon is called dispersion of light by prism. Which one of the following statements is correct ?
Asked in UPSC NDA 1 2021 · Topic: Optics (Prisms and Dispersion)
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Answer: B. Violet light will deviate the most and it is because of the refraction of light.
More Physics questions
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