Which of the following causes dispersion?a)Refractionb)Reflectionc)Total internal reflectiond)Total internal dispersionCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

The reason is that for a given angle f incidence, the reflection is the same for all the wavelengths of white light while the angle of refraction is different for different wavelengths. Therefore, this is how dispersion is caused.

Answer

Refraction causes dispersion
The phenomenon of dispersion occurs when light is refracted as it passes through a material. This refraction causes the different colors of light to separate due to their varying wavelengths.

Explanation:
- When light enters a medium at an angle, its speed changes, leading to refraction.
- Different colors of light have different wavelengths, causing them to bend at slightly different angles.
- This bending of light results in the separation of colors, creating a spectrum.

Importance of refraction in dispersion:
- Refraction is essential for dispersion to occur because it is the bending of light that causes the separation of colors.
- Without refraction, the different colors of light would not diverge, and we would not see the distinct spectrum.

Conclusion:
In conclusion, refraction is the primary cause of dispersion as it is the bending of light that results in the separation of colors. Understanding this phenomenon is crucial in various fields such as optics and physics.

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