Types of Lenses: Convex and Concave Lenses Flashcards
What is a double convex lens?
A double convex lens is an oval-shaped glass lens that has sides that are curved outwards
How many points of refraction happen in a double convex lens when light transmits through?
When light transmits through a double convex lens, there are 2 points of refraction (once when the light enters, and when it exits)
How many points of refraction happen in a single convex lens when light transmits through?
There is one point of refraction
What happens when light rays pass through a double convex lens?
When light rays pass through this lens they refract inwards twice, and converge at a point known as the focal point. After the focal point, the rays travel away from each other
Why does the light refract inwards in a double convex lens?
The light refracts inwards because the edges are curved outwards.
Will it take longer or shorter to converge in a single convex lens?
It will take longer to converge because it has only been refracted once
TRUE or FALSE - if a ray of light passes through the center of the lens at a 90 degree angle it will not refract at all
TRUE
What is a double concave lens?
A double concave lens is a glass lens that has sides that are curved inwards
What happens when light transmits through a double concave lens
When light transmits through a double concave lens, there are 2 points of refraction (when it enters the lens, and when it exits the lens)
How many points of refraction happen in a single concave lens?
There is only one point of refraction
Which way do the rays of light refract when going through a double concave lens?
They refract outward twice and continue to travel further and further away from each other after they have exited the lens
Why does the light refract outwards in a double concave lens?
The light refract outwards because the edges are curved inwards
Why in a single concave lens the rays don’t go as much outwards?
Because they have only been refracted once
TRUE or FALSE if a ray passes through the center of a double concave lens it will refract
FALSE - If a ray passes through the center of the lens at a 90 degree angle, it will not refract at all
