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 9
A beam of white light is passed through a prism and a spectrum is formed. If a second identical prism is placed in an inverted position after the first, what will be observed?
A student observes that the spectrum formed by a prism is wider for blue light than for red light. What does this indicate about the refractive index for blue and red light?
A student shines white light through a prism and observes a spectrum on a screen. If the student replaces the white light with red light, what will be observed on the screen?
Describe what is meant by the term 'refractive index' and its role in dispersion.
A beam of white light is passed through a prism and a spectrum is formed. If a second identical prism is placed in an inverted position after the first, what will be observed?
A student observes that the spectrum formed by a prism is wider for blue light than for red light. What does this indicate about the refractive index for blue and red light?
A student shines white light through a prism and observes a spectrum on a screen. If the student replaces the white light with red light, what will be observed on the screen?
If the angle of deviation for red light in a prism is 38°, and for violet light is 42°, what is the angular width of the spectrum?
Which color of visible light is deviated the most when white light passes through a glass prism?
(1) Red
(2) Green
(3) Blue
(4) Violet
Which of the following best describes the sequence of colors in a rainbow from the outer edge to the inner edge?
(1) Red to Violet
(2) Violet to Red
(3) Green to Yellow
(4) Blue to Orange
Which of the following best explains why different colors of light are refracted by different amounts in a prism?
(1) Different colors have different speeds in the prism
(2) Different colors have different frequencies
(3) Different colors have different energies
(4) All colors have the same refractive index
Which of the following colors has the highest frequency?
(1) Red
(2) Green
(3) Blue
(4) Violet
Fill in the blank: The angle between the incident ray and the emergent ray in a prism is called the angle of ________.
Fill in the blank: The color with the highest refractive index in glass is ________.
Fill in the blank: The phenomenon of dispersion shows that white light is made up of ________ colors.
Fill in the blank: The phenomenon of splitting of white light into seven colors is called ________.
True or False: Dispersion of light can be observed with any transparent material, not just glass.
True or False: Dispersion of light can occur in liquids as well as solids.
True or False: Dispersion of light can only occur in glass prisms.
True or False: Dispersion of light occurs because different colors of light travel at different speeds in a medium.
