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प्रश्न
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
उत्तर
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (b) 700 nm |
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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.
(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?
Describe how you could demonstrate that white light is composed of a number of colours.
How could you show that the colours of the spectrum combine to give white light?
Which is refracted most by a prism : red light or violet light? Explain why?
Which of the following coloured light has the least speed in glass prism?
(a) violet
(b) yellow
(c) red
(d) green
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
What conclusion do you draw about the nature of white light in part (b)?
What do you understand by the term spectrum?
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 a monochromatic beam of light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
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.
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.
The process of separation of light into its component colours while passing through a medium is called _______.
The splitting of white light in to seven colors is called ______.
The sunlight can be split into its constituent colors using ______.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
What is a rainbow?
The dispersive powers of flint glass and crown glass are 0.053 and 0.034, respectively and their mean refractive indices are 1.68 and 1.53 for white light. Calculate the angle of the flint glass prism required to form an achromatic combination with a crown glass prism of refracting angle 4°:
In the following diagram showing dispersion of white light by a glass prism, the colours 'P' and 'Q’ respectively are:
