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प्रश्न
The splitting up of white light into seven colours on passing through a glass prism is called ______.
पर्याय
refraction
deflection
dispersion
scattering
reflection
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उत्तर
The splitting up of white light into seven colours on passing through a glass prism is called dispersion.
संबंधित प्रश्न
Describe an activity to show that colours of white light splitted by a glass prism can be recombined to get white light by another identical glass prism. Also draw ray diagram to show the recombination of the spectrum of white light.
After tracing the path of a ray of light through a glass prism a student marked the angle of incidence (∠i), angle of refraction (∠r) angle of emergence (∠e) and the angle of deviation (∠D) as shown in the diagram. The correctly marked angles are :
(A) ∠i and ∠r
(B) ∠i and ∠e
(C) ∠i, ∠e and ∠D
(D) ∠i, ∠r and ∠e
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
Study the following ray diagram:
In this diagram, the angle of incidence, the angle of emergence and the angle of deviation respectively have been represented by
(A) y, p, z
(B) x, q, z
(C) p, y, z
(D) p, z, y
Draw a ray diagram to show the dispersion of white light.
In the formation of spectrum of white light by a prism:
- which colour is deviated least?
- which colour is deviated most?
What is a rainbow?
The colour of white light which is deviated the maximum on passing through the glass prism is:
(a) blue
(b) indigo
(c) red
(d) orange
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
Out of the following, the colour of light having the maximum wavelength is:
(a) violet
(b) indigo
(c) green
(d) orange
Why do you not see a spectrum of colours when light passes through a flat pane of glass?
When white light passes through a prism, it ............
The seven colours in the spectrum of sunlight in order, are represented as :
Out of air and glass, which is optically rarer? Give reason.
In figure AO is the ray of white light falling on a prism PQR. Complete the diagram till the light emerges out from the prism and falls on the screen.
When a white light ray falls on a prism, the ray at its first surface suffers ______.
In the following diagram, the correctly marked angles are
(A) All
(B) Only ∠i and ∠A
(C) ∠i, ∠r and ∠A
(D) ∠i, ∠A and ∠D
In an experiment to trace the path of a ray of light through a triangular glass prism, a student would observe that the emergent ray
(a) is parallel to the incident ray.
(b) is along the same direction of incident ray.
(c) gets deviated and bends towards the thinner part of the prism.
(d) gets deviated and bends towards the thicker part (base) of the prism.
If white light is used in same way what change is expected in the emergent beam?
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.
Make the correct choice for each of the following:
Which one of the following Fig correctly shows the path of the ray through the glass block?
A wave has wavelength 50Å of State its one use.
The phenomenon of splitting of light into its component colours is ___________ .
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
Write the range of wavelength of the ultraviolet spectrum.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
What is a rainbow?
