Dispersion of Light
Physics ⇒ Light and Optics
Dispersion of Light starts at 8 and continues till grade 12.
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See sample questions for grade 12
A beam of white light passes through a prism and forms a spectrum on a screen. If the prism is replaced with one made of a material with a higher refractive index, what will happen to the angular width of the spectrum?
Calculate the dispersive power (ω) of a material if the refractive index for violet light is 1.54, for red light is 1.50, and for mean yellow light is 1.52. (ω = (nV - nR)/(nY - 1))
Describe how the phenomenon of dispersion is used in spectrometers.
Describe the role of refractive index in the dispersion of light.
Explain the difference between angular dispersion and dispersive power.
Explain why a rainbow is formed after rain.
Explain why the colors in a spectrum do not overlap when white light passes through a prism.
Explain why white light splits into different colors when it passes through a prism but not when it passes through a glass slab.
If the angle of minimum deviation for red light in a prism is 38° and for violet light is 40°, what is the angular dispersion?
If the refractive index of glass for red light is 1.514 and for violet light is 1.532, which color will bend more when passing through the glass?
The refractive index of a material for red light is 1.50 and for blue light is 1.53. Calculate the difference in refractive index for these two colors.
What is meant by the dispersion of light?
Which color of light deviates the most when passing through a glass prism?
Which property of light is responsible for the formation of a spectrum when white light passes through a prism?
