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Total internal reflection occurs when a light hits its medium at an angle wider than a certain critical angle, depending upon what's normal to that medium. If the refractive index and the incident angle on the other side are measured lower or greater, respectively, the light is totally reflected.
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Do concave lenses have total internal reflection?
No, concave lenses do not exhibit total internal reflection. Total internal reflection occurs when light traveling through a medium encounters a boundary with a lower refractive index at an angle greater than the critical angle. Concave lenses are designed to converge light rays, whereas total internal reflection typically occurs at interfaces like air-water or glass-air.
What name is given to the angle where total internal reflection occurs?
The angle where total internal reflection occurs is called the critical angle. Beyond this angle, light traveling through a medium is completely reflected back into the same medium rather than refracted out.
Why do rain drop undergo total internal reflection?
Simple - they don't. TIR occurs when there is no external angle that corresponds to the internal angle. Since the light has to originate outside of the raindrop, and the geometry is the same every time the light crosses the boundary, there is always an external angle corresponding to the internal one. Anybody who claims otherwise is confusing "*AN* internal reflection" with "total internal reflection."
What is the minimum index of refraction for a glass or plastic prism to be used in binoculars so that total internal reflection occurs at 45 degrees?
The minimum index of refraction for total internal reflection at a 45-degree angle is 1.41. This means that the glass or plastic prism would need to have an index of refraction greater than or equal to 1.41 to achieve total internal reflection at that angle.
Can total internal reflection occur in iron substances?
Total internal reflection typically occurs in materials with a higher refractive index than air, such as glass or water. Iron, being a metal, has a lower refractive index than air, so total internal reflection is not likely to occur in iron substances.
How does total internal reflection occur in a prism?
Total internal reflection occurs in a prism when light traveling through the prism hits the boundary between the prism and the surrounding medium at an angle greater than the critical angle. This causes the light to reflect back into the prism instead of refracting out of it, resulting in total internal reflection.
What tajes place when the angle of incidence is smaller than the critical angle?
Refraction and partial internal reflection occurs
Why does a semi circle not have a internal reflection?
A semicircle does not exhibit internal reflection because it is not a complete closed shape like a full circle. Internal reflection occurs when light travels through a medium and reflects off its internal surfaces, which requires a boundary that can confine the light. In a semicircle, the straight edge does not provide a reflective boundary, allowing light to escape rather than reflecting internally. Thus, without a full boundary, internal reflection cannot occur.
What happens if the refraction angle is greater than ninety degrees?
This means no refraction occurs i.e. Total internal reflection (all light reflected) occurs
What is an example of toal internal reflection?
periscope is an example of total internal reflection.
When and how total internal reflection occur?
Total internal reflection occurs when a light ray travels from a denser medium to a less dense medium at an angle greater than the critical angle. This leads to all of the light being reflected back into the denser medium, rather than refracted through it. Total internal reflection is commonly observed in fiber optics and prism applications.
Why total internal reflection in water mixed with dettol?
Total internal reflection occurs when light travels from a medium with a higher refractive index to a medium with a lower refractive index at an angle greater than the critical angle. Dettol added to water increases the refractive index of the water, causing total internal reflection to occur at the water-air interface. This phenomenon can be observed as increased shininess or brightness due to the reflection of light within the water.
