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प्रश्न
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?
उत्तर
The colour of the emergent ray will be green. A prism does not change the colour of light. It simply disperses white light into its constituent colours.
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संबंधित प्रश्न
A narrow beam PQ of white light is passing through a glass prism ABC as shown in the diagram.
Trace it on your answer sheet and show the path of the emergent beam as observed on the screen DE.
(i) Write the name and cause of the phenomenon observed.
(ii) Where else in nature is this phenomenon observed?
(iii) Based on this observation, state the conclusion which can be drawn about the constituents of white light.
Fill in the blank with suitable word:
When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
A ray of light moving from an optically rarer to a denser medium
You are given a disc divided into seven sectors with colours violet, indigo, blue, green, yellow, orange and red in them. What would be its colour when it is rotated rapidly?
Complete the ray diagram given below to show the nature of light produced on the screen.
In which of the following four diagrams is the correct path of a ray of light passing through a glass prism shown ?
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
Write an Explanation.
Critical angle
Why do we see a rainbow in the sky only after rainfall?
