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प्रश्न
State True or False:
"Wavelength of red light is close to 700 nm.”
विकल्प
True
False
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उत्तर
This statement is True.
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संबंधित प्रश्न
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:
Why do the component colours of incident white light split into a spectrum while passing through a glass prism, explain
(i) A ray of white light breaks up into its components while passing through a glass prism. Draw a ray diagram to show the path of rays.
(ii) Mark the least deviated colour in your diagram
(iii) Why do different coloured rays deviate differently in a prism?
What happens when a ray of ordinary light is passed through a triangular glass prism?
Draw a diagram to show how white light can be dispersed into a spectrum by using a glass prism. Mark the various colours of the spectrum.
Describe how you could demonstrate that white light is composed of a number of colours.
Name the process which is involved in the formation of a rainbow.
Why do you not see a spectrum of colours when light passes through a flat pane of glass?
How does the speed of light determine the optical density of a medium?
The phenomenon of splitting of light into its component colours is ___________ .
What is the cause of the dispersion of white light through a glass prism? Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in an inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the faces of the prisms.
State two properties of ultra-violet radiations which differ from visible light.
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.
In the diagram, a narrow beam of white light is incident on a right-angled isosceles prism. The critical angle of the material of prism for the yellow colour of white light is 45°. Complete the diagram to show the path of blue, yellow, and red colours of white light till they emerge out of the prism.
The process of separation of light into its component colours while passing through a medium is called _______.
Draw a neat and labelled diagram for dispersion of light.
The splitting of white light into its component colours is called ____________.
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?
