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प्रश्न
What are the seven colours seen in a rainbow?
उत्तर
The seven colours seen in a rainbow are red, orange, yellow, green, blue, indigo and violet.
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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:
State the cause of dispersion of white light
What is spectrum? What is the name of glass shape used to produce a spectrum?
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
The diagram below shows the path taken by a narrow beam of yellow monochromatic light passing through an equiangular glass prism. If the yellow light is replaced by a narrow beam of white light incident at the same angle, draw another diagram to show the passage of white light through the prism and label it to show the effect of prism on the white light.
If white light is used in same way what change is expected in the emergent beam?
Define dispersion of light.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
The angle of deviation through a prism is minimum when
- Incident rays and emergent rays are symmetric to the prism.
- The refracted ray inside the prism becomes parallel to its base.
- The angle of incidence is equal to that of the angle of emergence.
- When the angle of emergence has doubled the angle of incidence.
Choose the correct answer from the options given below:
