Question:
The students in a class took a thick sheet of cardboard and made a small hole in its centre. Sunlight was allowed to fall on this small hole and they obtained a narrow beam of white light. A glass prism was taken and this white light was allowed to fall on one of its faces. The prism was turned slowly until the light that comes out of the opposite face of the prism appeared on the nearby screen. They studied this beautiful band of light and concluded that it is a spectrum of white light
(i) Give any one more instance in which this type of spectrum is observed.
The students in a class took a thick sheet of cardboard and made a small hole in its centre. Sunlight was allowed to fall on this small hole and they obtained a narrow beam of white light. A glass prism was taken and this white light was allowed to fall on one of its faces. The prism was turned slowly until the light that comes out of the opposite face of the prism appeared on the nearby screen. They studied this beautiful band of light and concluded that it is a spectrum of white light
(i) Give any one more instance in which this type of spectrum is observed.
(i) Give any one more instance in which this type of spectrum is observed.
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Spectra of white light are formed when light passes through a medium like a prism or water droplets, separating the colors.
Updated On: May 19, 2025
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Solution and Explanation
Another instance in which a spectrum similar to the one observed with a glass prism is seen is when white light passes through water droplets in the atmosphere during a rainstorm, forming a rainbow. This process is called dispersion, where the different colors of light are separated due to their different wavelengths.
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