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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
In the following diagram, the path of a ray of light passing through a glass prism is shown:
In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option):
(A) X, R and T
(B) Y, Q and T
(C) X, Q and P
(D) Y, Q and P
State the cause of dispersion of white light passing through a glass prism. How did Newton show that white light of sun contains seven colours using two identical glass prisms. Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the focus of the first prism.
What happens when a ray of ordinary light is passed through a triangular glass prism?
Why do you not see a spectrum of colours when light passes through a flat pane of glass?
A ray of white light falls on a prism. Draw a ray diagram to show that the prism disperses the white light.
Define the term dispersion of light.
In an experiment to trace the path of a ray of light through a glass prism for different values of angle of incidence a student would find that the emergent ray:
(A) is parallel to the incident ray
(B) perpendicular to the incident ray
(C) is parallel to the refracted ray
(D) bends at an angle to the direction of incident ray
A wave has wavelength 50Å of State the speed in vacuum.
Which one of the following is involved for the formation of rainbow in the sky?
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.
