All Questions
Tagged with refraction homework-and-exercises
13
questions
9
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5
answers
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Why would an object appear a different size when in water?
A friend of mine has a homework question and we're having some trouble figuring out what physical mechanisms come into play for this.
An underwater swimmer sees a spherical air bubble that appears ...
user24082
2
votes
1
answer
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Determining the path of a light ray
Let's consider a ray in the plane $xy$. Let the refractive index be defined in any point of the plane with the function $n(x,y)$.
In time $t=0$ the ray is located in coordinates $(x_0, y_0)$ and its ...
- 567
4
votes
2
answers
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Determining the refractive index of a foil
(59th Polish Olympiad in Physics, final stage, experimental part, 2010)
You have at your disposal:
a sample of blue foil of a homogeneous material, placed between two glass panes in a slide ...
- 567
4
votes
2
answers
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Why do we have minimum deviation angle in a Prism?
why do we have minimum deviation angle in a prism? I mean why does the angle of emergence first decreases, attains a minimum value and then increases.why?
- 290
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1
answer
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Apparent depth and the viewing angle [closed]
Does the viewing angle of a person observing a coin placed in a bucket of water affect the apparent depth in any way?
- 748
2
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1
answer
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Path of a light ray in a medium of varying refractive index [closed]
How do we get the equation for the path of a light ray in a medium of varying refractive index.
I can draw a rough sketch, but don't know how do we get the exact curve.
I encountered this while ...
- 117
0
votes
1
answer
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Equations of Fermat's principle/Snell's law in a gradient lens (sugar aquarium)
I'm trying to animate a beam of light inside a substance with gradient index of refraction as a function of y. A good example of that is a syrup inside an aquarium like here https://www.youtube.com/...
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3
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4
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Refraction of light through a slab of variable refractive index
Here I am posting a question of Jee Adv. 2023 based on refraction.
A monochromatic light wave is incident normally on a glass slab of
thickness đť‘‘, as shown in the figure. The refractive index of the ...
- 109
3
votes
1
answer
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(How) can one use the concept of apparent depth to solve this ray-refraction problem?
I was solving the following question:
An observer can see through a small hole on the side of a jar (radius 15 cm) at a point at height of 15 cm from the bottom (see figure). The hole is at a height ...
2
votes
1
answer
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How to graphically determine equivalent focal length of two thin lenses?
Suppose we have the schematic above. The first lens has a focal length of 80mm and the second one has a focal length of 60mm, and both are biconvex. My job is to determine, graphically the equivalent ...
- 637
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1
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Derivation for optical path length and the origins of the formula
So I've learnt that the formula for optical path length is $OPL = ns$, where $n$ is refractive index of the medium and $s$ is its geometrical length, the problem is i cant really get around this ...
- 21
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2
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Which of the following phenomena are responsible for rainbows?
Which of the following phenomena of light are responsible for the formation of a rainbow?
1) reflection, refraction, dispersion
2) refraction, dispersion, total internal reflection
3) ...
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2
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Apparent depth is supposed to be independent of viewing angle but this seems inconsistent with critical angle refraction
When rays from the object at some depth are draw so as to be incident at the critical angle (or some angle just lower) the ray is refracted along the surface. Retracing this line would give you an ...
