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प्रश्न
What do you understand by the term spectrum?
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उत्तर
The colour band obtained on a screen on passing white light through a prism is called the spectrum.
संबंधित प्रश्न
As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?
In the formation of spectrum of white light by a prism:
which colour is deviated least?
A ray of light moving from an optically rarer to a denser medium
Define the term dispersion of light.
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.

Which characteristic property of light is responsible for the blue colour of the sky?
Observe the given figure and write appropriate phenomenon of light in the box.

Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Instead of sunlight, a green-coloured ray is passed through a glass prism. What will be the colour of the emergent ray?
