During refraction, the frequency of light remains constant.
True
The formula for Snell's Law is \frac{\sin(\theta_1)}{\sin(\theta_2)} = \frac{n_2}{n_1}</latex> where θ1 is the angle of incidence
How is the refractive index defined?
Ratio of light speed in vacuum to light speed in medium
What is the refractive index of air?
1.0003
The higher the refractive index, the more the speed of light is reduced in that medium.
True
What do θ1 and θ2 represent in Snell's Law?
Angles of incidence and refraction
Why does light refract when it passes from one medium to another?
Change in the speed of light
<statement_start>v1 and v2 represent the speeds of light in the two media
What is the definition of refraction?
Bending of light
Snell's Law is expressed as \frac{\sin \theta_{1}}{\sin \theta_{2}} = \frac{n_{2}}{n_{1}}</latex>
True
Snell's Law states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the refractive indices of the two media.
False
What is the definition of the refractive index?
Ratio of light speeds
The refractive index is a dimensionless quantity.
True
What is the symbol for the refractive index?
n
When light passes from one medium to another with different refractive indices, it undergoes refraction
The frequency of light changes when it passes from one medium to another.
False
What is total internal reflection used in?
Fiber optics
To solve problems using Snell's Law, the formula must be rearranged
Refraction occurs because the speed of light differs
What does Snell's Law state?
Ratio of sines equals inverse ratio of refractive indices
Snell's Law governs how light bends when it passes from one medium to another.
True
The formula for refractive index is n=vc where c is the speed of light in a vacuum
Match the material with its refractive index:
Water ↔️ 1.33
Glass ↔️ 1.5-1.9
Diamond ↔️ 2.42
When light passes from one medium to another, its frequency remains constant
The speed of light changes when it passes from one medium to another.
True
What are θ1 and θ2 referred to as in the context of refraction?
Angles of incidence and refraction
n1 and n_{2}</latex> denote the refractive indices of the two media.
True
<statement_start>In refraction, the frequency of light remains constant
What does θ1 represent in Snell's Law?
Angle of incidence
<statement_start>Snell's Law involves the ratio of the sines of the angles of incidence and refraction
Match the term with its description:
θ1 ↔️ Angle of incidence
θ2 ↔️ Angle of refraction
n1 ↔️ Refractive index of medium 1
n2 ↔️ Refractive index of medium 2
<statement_start>The formula for the refractive index is n=vc, where c is the speed of light in a vacuum
What does the refractive index measure?
Reduction in light speed
The higher the refractive index, the more the speed of light is reduced in that medium.
True
What law governs the behavior of light as it passes between two media?
Snell's Law
The critical angle is the angle of incidence at which the angle of refraction is 90 degrees.
Total internal reflection occurs when light travels from a denser medium to a less dense medium at an angle greater than the critical angle.
True
What is the approximate angle of refraction when light travels from air to glass at an angle of incidence of 30 degrees?