Study page part 3 Flashcards
What is refraction?
Refraction is the bending of light as it passes from one medium to another with different densities.
True or False: Light travels faster in higher density mediums.
False
In refraction, what happens to light when it enters a medium of lower density?
It bends away from the normal.
Fill in the blank: The angle of incidence is equal to the angle of ______ in a higher density medium.
refraction
What is the critical angle in the context of refraction?
The critical angle is the angle of incidence above which total internal reflection occurs.
Multiple Choice: Which of the following mediums is likely to have a higher density? A) Air B) Water C) Oil
B) Water
What does Snell’s Law describe?
Snell’s Law describes the relationship between the angles of incidence and refraction for light passing between two media.
True or False: A ray of light will always bend towards the normal when entering a higher density medium.
True
What is the formula for Snell’s Law?
n1 * sin(θ1) = n2 * sin(θ2)
Fill in the blank: When light moves from a denser to a less dense medium, it ______.
speeds up
What happens to the speed of light in a medium with a higher refractive index?
The speed of light decreases.
Multiple Choice: If light enters glass (higher density) from air (lower density), how does it behave? A) Bends towards the normal B) Bends away from the normal
A) Bends towards the normal
What is total internal reflection?
Total internal reflection is when light reflects entirely back into a medium instead of refracting out.
True or False: The refractive index is higher in lower density mediums.
False
How does wavelength change when light enters a medium of higher density?
The wavelength decreases.
Fill in the blank: The ______ of a medium indicates how much it can bend light.
refractive index
What is the effect of temperature on the density of a medium?
Increasing temperature usually decreases the density of a medium.
What type of diagram is commonly used to illustrate refraction?
Ray diagrams
Multiple Choice: Which phenomenon occurs when light does not pass into a new medium? A) Refraction B) Reflection C) Dispersion
B) Reflection
What does a higher refractive index indicate about a medium?
It indicates that the medium is denser and light travels slower in it.
True or False: The angle of refraction is always less than the angle of incidence when light enters a denser medium.
True
Fill in the blank: When light travels from water to air, it bends ______.
away from the normal
What role does the normal line play in refraction diagrams?
The normal line serves as a reference for measuring angles of incidence and refraction.
