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Snell's law Light : Reflection and Refraction. Video Lecture - Class 10
FAQs on Snell's law Light : Reflection and Refraction. Video Lecture - Class 10
| 1. What is Snell's law of light? |  |
Ans. Snell's law of light, also known as the law of refraction, describes the behavior of light when it passes from one medium to another. It states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant for a given pair of media. This law governs the bending of light as it enters and exits different substances.
| 2. How does Snell's law explain reflection? | |
Ans. Snell's law primarily focuses on refraction, which is the bending of light as it passes from one medium to another. However, reflection can also be understood through Snell's law. When light encounters a boundary between two media, some of it may be reflected back. This reflection can be explained by considering the change in the angle of incidence and the angle of reflection according to Snell's law.
| 3. What factors affect the bending of light according to Snell's law? | |
Ans. The bending of light, or refraction, is influenced by several factors according to Snell's law. The angle of incidence, the angle of refraction, and the refractive indices of the two media involved are the key factors. The refractive index is a measure of how much a substance can slow down or speed up light. The greater the difference in refractive indices between two media, the greater the bending of light.
| 4. How can Snell's law be applied in practical situations? | |
Ans. Snell's law is applied in various practical situations. For example, it is used in the design of lenses for glasses and camera lenses to ensure light is properly focused. It is also important in understanding the behavior of light in different mediums, such as water or glass, which is crucial in the field of optics. Additionally, Snell's law is utilized in the study of wave propagation, such as in the analysis of seismic waves.
| 5. What is the mathematical representation of Snell's law? | |
Ans. Snell's law can be mathematically represented as follows:
n₁sinθ₁ = n₂sinθ₂
where n₁ and n₂ are the refractive indices of the two media, and θ₁ and θ₂ are the angles of incidence and refraction, respectively. This equation shows that the product of the refractive index and the sine of the angle of incidence is equal to the product of the refractive index and the sine of the angle of refraction.
Text Transcript from Video
since law during the fraction of light
from medium one to medium two the ratio
of sine of angle of incidence and sine
of angle of refraction is constant it is
known as refractive index of medium 2
with respect to medium 1 refractive
index of medium 2 with respect to medium
1 is also equal to the ratio of velocity
of light in medium 1 and velocity of
light in medium 2 if n 2 is equal to
refractive index of medium 2 with
respect to air or vacuum and N 1 is
equal to refractive index of medium 1
with respect to air or vacuum then
refractive index of medium 2 with
respect to 1 is equal to ratio of
refractive index of medium 2 with
respect to air or vacuum and refractive
index of medium 1 with respect to air or
vacuum
from medium one to medium two the ratio
of sine of angle of incidence and sine
of angle of refraction is constant it is
known as refractive index of medium 2
with respect to medium 1 refractive
index of medium 2 with respect to medium
1 is also equal to the ratio of velocity
of light in medium 1 and velocity of
light in medium 2 if n 2 is equal to
refractive index of medium 2 with
respect to air or vacuum and N 1 is
equal to refractive index of medium 1
with respect to air or vacuum then
refractive index of medium 2 with
respect to 1 is equal to ratio of
refractive index of medium 2 with
respect to air or vacuum and refractive
index of medium 1 with respect to air or
vacuum
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Nov 30, 2024 Last updated |
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