Advertisements
Advertisements
Questions
Define the term dispersion of white light.
What is a dispersion of white light?
Advertisements
Solution
The splitting of a beam of white light into its seven constituent colors, when it passes through a glass prism, is called the dispersion of light.
APPEARS IN
RELATED QUESTIONS
A student is observing a diagram showing the path of a ray of light passing through a glass prism. He would find that for all angles of incidence the ray of light bends:
In the following diagram the correctly marked angles are :
(a) ∠A and ∠e
(b) ∠i, ∠A and ∠D
(c) ∠A ∠r and ∠e
(b) ∠A ∠r and ∠D
Describe how you could demonstrate that white light is composed of a number of colours.
What are the seven colours seen in a rainbow?
How does the speed of light determine the optical density of a medium?
If white light is used in same way what change is expected in the emergent beam?
Distinguish between an impure spectrum and a pure spectrum.
Sunlight entering through a narrow aperture falls on a prism. Draw a neat labelled ray diagram to show the formation of the spectrum on a screen. Name the colour obtained nearer the base of the prism.
Why do we see a rainbow in the sky only after rainfall?
Assertion: We can see the rainbow in the sky when the rain starts falling after a spell of bright sunlight.
Reason: The rainbow is formed due to the dispersion of light.
