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.
Describe what would happen if monochromatic light (light of a single color) passes through a prism.
Explain why a prism causes dispersion of light but a glass slab does not.
Explain why the angle of deviation is different for different colors of light passing through a prism.
Explain why the rainbow is an example of dispersion of light in nature.
Explain why the sky appears blue during the day and reddish at sunrise and sunset, in terms of dispersion and scattering.
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?
Name the scientist who first explained the phenomenon of dispersion of light using a prism.
What is meant by the dispersion of light?
What is the main cause of dispersion of light in a prism?
When white light passes through a prism, which color emerges at the bottom of the spectrum?
When white light passes through a prism, which color emerges at the top of the spectrum?
Which color in the visible spectrum has the longest wavelength?
Which color in the visible spectrum has the shortest wavelength?
Which color of visible light is deviated the least when white light passes through a glass prism?
Which property of light is responsible for the formation of a spectrum when white light passes through a prism?
