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Questions and Answers
What relationship does the angle of the prism ($A$) have with the angles of incidence ($ heta_1$) and refraction ($ heta_2$)?
What relationship does the angle of the prism ($A$) have with the angles of incidence ($ heta_1$) and refraction ($ heta_2$)?
- $A = heta_1 + heta_2$ (correct)
- $A = heta_1 - heta_2$
- $A = heta_1 imes heta_2$
- $A = heta_1 / heta_2$
What is the critical angle when light is moving from a denser to a less dense medium?
What is the critical angle when light is moving from a denser to a less dense medium?
- The angle at which total internal reflection occurs.
- The angle at which the refracted ray is at 90 degrees to the normal. (correct)
- The angle with the maximum refraction possible.
- The angle that minimizes refraction.
How is the refractive index ($n$) of a material calculated from the angles of refraction?
How is the refractive index ($n$) of a material calculated from the angles of refraction?
- $n = rac{ heta_2}{ heta_1}$
- $n = rac{1}{ an heta_2}$
- $n = an heta_2$
- $n = rac{1}{ ext{sin} heta_2}$ (correct)
What does the formula $ heta_1 + heta_2 = A + ext{sin} heta_1$ convey in relation to the angles in a prism?
What does the formula $ heta_1 + heta_2 = A + ext{sin} heta_1$ convey in relation to the angles in a prism?
Which variable is defined as the angle between the emergent ray and the initial ray?
Which variable is defined as the angle between the emergent ray and the initial ray?
Flashcards
Prism Refraction
Prism Refraction
Light bending as it passes through a prism, determined by the prism's angle and the material's refractive index.
Refractive Index (n)
Refractive Index (n)
A measure of how much a material slows down light compared to a vacuum.
Angle of Deviation
Angle of Deviation
Angle between the incident and emergent rays after passing through a prism.
Critical Angle
Critical Angle
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Angle of Prism (A)
Angle of Prism (A)
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Study Notes
Snell's Law and Refraction
- Snell's Law: n₁ sin θ₁ = n₂ sin θ₂
- n₁: refractive index of medium 1
- n₂: refractive index of medium 2
- θ₁: angle of incidence
- θ₂: angle of refraction
Critical Angle
- Critical Angle (θc): The angle of incidence that produces an angle of refraction of 90 degrees.
- Beyond this angle, total internal reflection occurs.
- n₁ sin θc = n₂ sin 90°
Angle of Deviation (A)
- In a prism, the angle between the incident ray and emergent ray is the angle of deviation (A)
- A = θ₁ + θ₂ - A
- θ₁ = angle of incidence
- θ₂ = angle of emergence
- A= angle of the prism
Relationship between angles
- θ₁ = Angle of incidence
- θ₂ = Angle of refraction
- α=Φ₁ - A (where Φ₁ = angle of incidence and A = angle of prism)
- Φ₂ = θ₂ - A (where θ₂ = Angle of refraction and A = angle of prism)
Refractive Index (n)
- n = sinθ₁/ sinθ₂
- n is a constant related to the speed of light in different media, and θ₁ and θ₂ are the angles of incident light and transmitted light.
- n represents the ratio between the speed of light in a vacuum and the speed of light in the medium.
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