When a ray of light passes through prismSelect an answerAThe deviation of red light is maximumBThe deviation of violet light is maximumCThe deviation of blue light is maximumDAll rays deviate equally.
Question
When a ray of light passes through prismSelect an answerAThe deviation of red light is maximumBThe deviation of violet light is maximumCThe deviation of blue light is maximumDAll rays deviate equally.
Solution
The correct answer is B. The deviation of violet light is maximum.
Here's why:
When a ray of light passes through a prism, it gets refracted (bends). However, not all colors of light refract at the same angle. This is due to a phenomenon called dispersion.
Dispersion is the process of separating light into its constituent colors. This happens because different colors of light have different wavelengths, and the speed of light changes slightly for different wavelengths when it enters a new medium (like a prism).
In the visible spectrum, red light has the longest wavelength and violet light has the shortest. When light enters a prism, the change in speed is greater for violet light than for red light. This means that violet light bends more than red light.
So, when a ray of light passes through a prism, the deviation of violet light is maximum.
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