When white light is dispersed by a glass prism into seven colours, out of the following colours which colour will be
deviated the least?
Yellow
When white light passes through a glass prism, it is dispersed into its component colors. This happens because different colors of light have different wavelengths and thus refract differently when entering and exiting materials like glass. This process is known as dispersion.
The degree of deviation is dependent on the wavelength of the color; shorter wavelengths are generally refracted more than longer ones. In the visible spectrum, violet light has the shortest wavelength and is deviated the most, while red light has the longest wavelength and is deviated the least. Yellow light has a relatively longer wavelength compared to colors like blue and indigo, leading to less deviation.
Thus, among the given options of Blue, Indigo, Yellow, and Green, yellow light will be deviated the least when white light is dispersed by a glass prism.
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Important Questions from Optics
Who was the first one to use a glass prism to obtain the spectrum of sunlight?
Twinkling of stars is due to:
Which one of the following colours is least deviated by the glass prism?
In which a convex mirror is used?
A. Rear View mirrors in vehicles
B. Glass windows
C. Makeup Mirror
D. Kaleidoscope
What is the reason for formation of Mirage in desert?
