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प्रश्न
The splitting up of white light into seven colours on passing through a glass prism is called:
(a) refraction
(b) deflection
(c) dispersion
(d) scattering
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उत्तर
dispersion
The splitting of white light into seven colours on passing through a glass prism is called dispersion.
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संबंधित प्रश्न
What happens when a ray of ordinary light is passed through a triangular glass prism?
Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
(i) incident ray
(ii) emergent ray, and
(iii) angle of deviation.
The coloured light having the maximum speed in glass prism is:
(a) blue
(b) green
(c) violet
(d) yellow
Out of the following, the colour of light having the maximum wavelength is:
(a) violet
(b) indigo
(c) green
(d) orange
The splitting of white light into its constituent colours is called .............
How does the speed of light determine the optical density of a medium?
Which is optically denser: water or air? Give reason
Out of air and glass, which is optically rarer? Give reason.
Complete the ray diagram given below to show the nature of light produced on the screen.
An object AB is placed in front of a convex lens as shown in fig. 4. Complete the ray diagram and obtain the image formed and state the nature of the image.
Which characteristic property of light is responsible for the blue colour of the sky?
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
In the figure, a beam of light consisting of three colours blue, red, and yellow is incident on a prism and on a rectangular glass block respectively. Complete the diagram by drawings of the refracted and emergent rays.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
What is Newton’s disc?
What is a rainbow?
A ray of light is incident at 45° on an equilateral prism in the diagram below.
- Name the phenomenon exhibited by the ray of light when it enters and emerges out of the prism.
- State the cause of the above phenomenon mentioned by you.
