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Why do different colours get separated when white light passes through a prism ? How can we recombine the components of white light after a prism has separated them. Explain. |
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Answer» A spectrum is the band of distinct colours we obtain when the white light is split by a prism. We can recombine the component of white light by passing them through a prism placed upside down near the given prism. When we pass white light through two identical prisms held side by side with their refracting edges in opposite directions; the first prism disperses white light but the second prism recombines them. Thus light emerging from the second prism is white. |
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