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प्रश्न
When we place a glass prism in the path of a narrow beam of white light a spectrum is obtained. What happens when a second identical prism is placed in an inverted position with respect to the first prism? Draw a labelled ray diagram to illustrate it.
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उत्तर
The first prism disperses white light into its seven constituent colours and forms the spectrum. The other inverted prism recombines all the seven colors and gives a white light.
संबंधित प्रश्न
In the formation of spectrum of white light by a prism:
- which colour is deviated least?
- which colour is deviated most?
When a ray of light enters a prism, it bends ______ the normal; as it leaves the prism, it bends ______ the normal.
Describe how you could demonstrate that white light is composed of a number of colours.
The seven colours in the spectrum of sunlight in order, are represented as :
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?
The wavelengths of violet and red light are 4000 Å and 8000 Å respectively. Which of the two has the higher frequency?
Draw a neat and labelled diagram for dispersion of light.
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
A prism of refractive index `sqrt2` and refracting angle A produces minimum deviation δm of a ray on one face at an angle of incidence 45°, The values of A and δm are, respectively ______.
State the colour which bends:
- The most.
- The least while passing through a glass prism.
