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?
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.
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?
A prism produces a spectrum from white light. If the incident light is monochromatic, will a spectrum be observed?
A student observes that the spectrum formed by a prism is wider for blue light than for red light. Is this observation correct?
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))
Which of the following best explains why the sky appears blue? (1) Dispersion of light (2) Scattering of light (3) Reflection of light (4) Refraction of light
Which of the following colors has the highest speed in glass? (1) Red (2) Green (3) Blue (4) Violet
Which of the following colors of visible light has the shortest wavelength? (1) Red (2) Green (3) Blue (4) Violet
Which of the following is NOT a result of dispersion? (1) Formation of a rainbow (2) White light passing through a prism (3) Reflection from a mirror (4) Colors seen in soap bubbles
The ability of a material to separate different wavelengths of light is called its __________ power.
The angular separation between red and violet light after passing through a prism is called __________.
The difference in the angle of deviation between red and violet light is called __________.
The phenomenon of splitting of light into its component colors is called __________.
A prism produces a spectrum from white light. If the incident light is monochromatic, will a spectrum be observed?
A student observes that the spectrum formed by a prism is wider for blue light than for red light. Is this observation correct?
True or False: All transparent materials cause the same amount of dispersion for white light.
True or False: Dispersion can occur in both solids and liquids.
