All Questions
Tagged with refraction homework-and-exercises
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Difficulty in understanding an optics question
So here's the question:-
A thin film of transparent material of refractive index $1.52$ and thickness $0.42\ \rm \mu m$ forms a thin coating on glass of refractive index $1.60$. It is viewed by ...
CommunityBot
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How to derive Fresnel's tangent law?
In this Wikipedia post the $r_p$ Fresnel reflection coefficient is given by:
$$r_p = \frac{\tan{(\theta_i - \theta_t)}}{\tan{(\theta_i + \theta_t)}}.$$
How can this be derived from the previous ...
CommunityBot
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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 𝑑, as shown in the figure. The refractive index of the ...
- 158
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Snell's Law- Extraordinary ray
I applied the snell's law to find the angle of refraction of the Ordinary and Extraordinary ray. And I got the correct answer 3.51. But I know my approach to the question is wrong because I applied ...
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Refraction of light - Huygens' Principle
To elucidate the rationale behind the bending of light as it transitions between different mediums, Huygens' principle is predominantly employed. The procedure, as demonstrated in this video (link: ...
- 207k
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Do Normal Incidence contradicts the definition of refraction?
Professor told our class that if someone wants to define refraction in words, it can be done as the following, The deviation of light from its path when it passes from one medium to another is called ...
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I need to figure out the length of a crystal to move a light beam [closed]
I need to figure out the length of a crystal to move a light beam shining through it.
The height is known, and so is the refractive index of the crystal and its length. What I can't figure out is the ...
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Refraction of light with different wavelengths [closed]
A red light and blue light enter a rectangular glass block normal to its surface at the same time. Strictly speaking, after passing through the block, which pulse exits first?
Should I consider their ...
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Dependence of lens power on the refractive index of the medium
How does the power of a lens depend on the refractive index of the surrounding medium?
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Why is the time taken for light propagation between two points in anisotropic media independent of $y$?
Background
Light propagating in an anisotropic medium does not (in general) take a straight-line path between two points. The propagation time between those points, then, is dependent on the total ...
- 207k
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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 ...
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Is it true to say no refraction takes place when a ray comes along normal drawn to interface?
Many books and websites in our country say that there are two conditions for no refraction of light:
If index of Refraction of media on both sides is same.
If the ray of light falls normally on the ...
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On a minima problem in optics
I have trodding through a calculus textbook, more specifically — through a chapter on the methods of obtaining the extrema of functions using derivatives, including certain problems in optics (Fermat’...
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Question about a specific geometrical optics/Fermat's principle problem and it's given solution
I'm studying the following question
P119 On a spherical planet, the refractive index of the atmosphere, as a function of altitude $h$ above the surface, varies according to the formula
$$n(h) = \frac{...
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Behavior of a laser beam in a spherically symmetric medium [closed]
A laser beam propagates through a spherically symmetric medium. The refractive index varies with the distance from the centre of symmetry $r$ according to the equation:
$$
\mu=\mu_0\frac{r}{r_0}
$$
...
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