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Questions
Define the term dispersion of white light.
What is a dispersion of white light?
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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.
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RELATED QUESTIONS
Study the following diagrams in which the path of a ray of light passing through a glass prism as traced by four students P, Q, R and S is shown:

The student who has traced the path correctly is
(A) P
(B) Q
(C) R
(D) S
The path of a ray of light passing through a glass prism is shown below:

In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:
(A) O, Y, Z and N,
(B) P, Y, M and Z,
(C) O, X, M and Z,
(D) P, X, Z and N.
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A ray of light moving from an optically rarer to a denser medium
State the speed of light in (a) air, (b) water, and (c) glass
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An object is placed in front of a converging lens and in front of a diverging lens as in fig.

(a)Complete the ray diagram to obtain an image.
(b)Compare the nature of image formed by both the lenses in the above case.
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
Observe the given figure and write appropriate phenomenon of light in the box.

Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
