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Refraction Through a Glass Prism Video Lecture | Physics Class 12 - NEET

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FAQs on Refraction Through a Glass Prism Video Lecture - Physics Class 12 - NEET

1. What is refraction?
Ans. Refraction is the bending of light as it passes from one medium to another, such as from air to glass or water. It occurs because light travels at different speeds in different mediums, causing the light rays to change direction.
2. How does a glass prism refract light?
Ans. A glass prism refracts light by causing the light rays to bend as they pass through the prism. This bending occurs due to the different indices of refraction of glass compared to air. The prism shape allows for multiple refractions, leading to dispersion and the separation of white light into its constituent colors.
3. What is the role of angles in refraction through a glass prism?
Ans. Angles play a crucial role in refraction through a glass prism. The angle of incidence is the angle formed between the incident ray and the normal to the surface of the prism. The angle of refraction is the angle formed between the refracted ray and the normal to the surface of the prism. These angles determine the amount of bending that occurs during refraction.
4. Why does dispersion occur when light passes through a glass prism?
Ans. Dispersion occurs when light passes through a glass prism because different colors of light have different wavelengths and thus different indices of refraction. As the light enters the prism, each color bends at a slightly different angle, causing the colors to separate. This separation results in the visible spectrum of colors.
5. What is the significance of refraction through a glass prism?
Ans. Refraction through a glass prism is significant as it allows for the study of the properties of light and the phenomenon of dispersion. It helps in understanding the nature of light and its behavior when passing through different mediums. Additionally, it is the basis for various optical devices, such as spectroscopes and prismatic lenses, which have important applications in fields like physics, astronomy, and telecommunications.
157 videos|453 docs|185 tests
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