Rajesh for observing dispersion of light used light from laser torch to fall on a prism. Will he be able to observe a band of seven colours
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Yes , of course he will observe the seven colours of band but not that much intensity of colour as it is not a natural sun ......
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By using prism Rajesh will be able to observe the dispersion of light that forms seven colors of rainbow, since refraction light will be passing through the air and glass.
This was the experiment conducted by Sir Isaac Newton where he took a disc that has 7 colors and rolled the disc to witness white color, which is seen in sunlight.
Moreover, water droplets will be acting as prism and when light passes throught droplets, it shows the colors in rainbow.
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