imagine a section of a prism as a triangle ABC with the angle A=60 degrees and AB=AC, and the refractive index is 1.61.
and the incidence angle is 20°, It asks us to find the angle of deviation when the ray comes out of the prism and draw a trace of it inside the prism
phyisics help
posted in
Off Topic
imagine a section of a prism as a triangle ABC with the angle A=60 degrees and AB=AC, and the refractive index is 1.61.
and the incidence angle is 20°, It asks us to find the angle of deviation when the ray comes out of the prism and draw a trace of it inside the prism
and the incidence angle is 20°, It asks us to find the angle of deviation when the ray comes out of the prism and draw a trace of it inside the prism
from the sounds of it do n1sin(feta1) = n2sin(feta2) to get the angle of refraction after passing through the plane, where the fetas are measured perpendicularly from the normal where the ray enters the prism. then draw that line. look where it hits the next boundary and look to see if the ray leaves the prism or total internal reflection happens by repeating n1sin(feta.....)
edit: find critical angle doing n=1/sin(c) where c is the critical angle and if the angle at a boundary is greater than c then total internal reflection
from the sounds of it do n1sin(feta1) = n2sin(feta2) to get the angle of refraction after passing through the plane, where the fetas are measured perpendicularly from the normal where the ray enters the prism. then draw that line. look where it hits the next boundary and look to see if the ray leaves the prism or total internal reflection happens by repeating n1sin(feta.....)
edit: find critical angle doing n=1/sin(c) where c is the critical angle and if the angle at a boundary is greater than c then total internal reflection
edit: find critical angle doing n=1/sin(c) where c is the critical angle and if the angle at a boundary is greater than c then total internal reflection
http://imgur.com/a/ksf6a
im in the car rn so this is probably not very readable
if my math is right the angle of deviation should be 120 degrees
http://imgur.com/a/ksf6a
im in the car rn so this is probably not very readable
if my math is right the angle of deviation should be 120 degrees
im in the car rn so this is probably not very readable
if my math is right the angle of deviation should be 120 degrees
rocketslayhttp://imgur.com/a/ksf6a
im in the car rn so this is probably not very readable
what about the angle of deviation?
[quote=rocketslay]http://imgur.com/a/ksf6a
im in the car rn so this is probably not very readable[/quote]
what about the angle of deviation?
im in the car rn so this is probably not very readable[/quote]
what about the angle of deviation?
georgebaiihttps://www.youtube.com/watch?v=IRsPheErBj8
I bet one day you will be washing his car, just like in back to the future.
"Nerds" are good.
[quote=georgebaii]https://www.youtube.com/watch?v=IRsPheErBj8[/quote]
I bet one day you will be washing his car, just like in back to the future.
"Nerds" are good.
I bet one day you will be washing his car, just like in back to the future.
"Nerds" are good.
Snell's Law:
n1sin(theta1) = n2sin(theta2)
Text Explanation:
Find the new angle the incident light makes after entering a side of the prism. For visualization purposes it can help to draw that ray to the other side of the prism before it leaves to make a new triangle. To find the incident angle that light hits the other side of the prism with you can use the complement of the angle you calculated and one of the 60 degree angles (those two and your new angle should add to 180 degrees). Use snell's law again with the new incident angle you calculated to find the exit angle (unless total internal reflection happens, see post above).
This ends up being less of a physics question and more of a geometry question in the end, so make sure you pay attention as you work with the angles.
Visualization:
https://puu.sh/w70Ob/20a183c1cf.png
The sum of the deflections on the ray of light is the deviation angle.
Snell's Law:
n1sin(theta1) = n2sin(theta2)
Text Explanation:
Find the new angle the incident light makes after entering a side of the prism. For visualization purposes it can help to draw that ray to the other side of the prism before it leaves to make a new triangle. To find the incident angle that light hits the other side of the prism with you can use the complement of the angle you calculated and one of the 60 degree angles (those two and your new angle should add to 180 degrees). Use snell's law again with the new incident angle you calculated to find the exit angle (unless total internal reflection happens, see post above).
This ends up being less of a physics question and more of a geometry question in the end, so make sure you pay attention as you work with the angles.
Visualization:
[img]https://puu.sh/w70Ob/20a183c1cf.png[/img]
The sum of the deflections on the ray of light is the deviation angle.
n1sin(theta1) = n2sin(theta2)
Text Explanation:
Find the new angle the incident light makes after entering a side of the prism. For visualization purposes it can help to draw that ray to the other side of the prism before it leaves to make a new triangle. To find the incident angle that light hits the other side of the prism with you can use the complement of the angle you calculated and one of the 60 degree angles (those two and your new angle should add to 180 degrees). Use snell's law again with the new incident angle you calculated to find the exit angle (unless total internal reflection happens, see post above).
This ends up being less of a physics question and more of a geometry question in the end, so make sure you pay attention as you work with the angles.
Visualization:
[img]https://puu.sh/w70Ob/20a183c1cf.png[/img]
The sum of the deflections on the ray of light is the deviation angle.
rocketslayhttp://imgur.com/a/ksf6a
im in the car rn so this is probably not very readable
if my math is right the angle of deviation should be 120 degrees
Not sure about that but I think it should be below 90°
[quote=rocketslay]http://imgur.com/a/ksf6a
im in the car rn so this is probably not very readable
if my math is right the angle of deviation should be 120 degrees[/quote]
Not sure about that but I think it should be below 90°
im in the car rn so this is probably not very readable
if my math is right the angle of deviation should be 120 degrees[/quote]
Not sure about that but I think it should be below 90°
Please
sign in through STEAM
to post a comment.