why does white light split to form spectrum only in glass prism and not in glass slab?
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In a prism, refraction of light takes place at two slant surfaces. At first surface, white light disperse and refract towards base and at second surface, different colors light refract to spread further. Therefore, it is able to create a spectrum.
In a rectangular glass block, refraction of light takes place at two parallel surfaces. At first surface, white light disperse and refract a different extent which depends on the Wavelength (More Wavelength less Refraction). At, second surface, the different color light refracts to a different extent and emerge as a beam of white light.
In a rectangular glass block, refraction of light takes place at two parallel surfaces. At first surface, white light disperse and refract a different extent which depends on the Wavelength (More Wavelength less Refraction). At, second surface, the different color light refracts to a different extent and emerge as a beam of white light.
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