about total internal reflection & application
about total internal reflection & application
Hi Sreelakshmi!
When light passes from one medium to other, it bends from its path which is called refraction. When a light ray passes from denser to rarer medium, at some angle of incidence it does not go out of the denser medium but just grazes along the boundary (i.e. angle of refraction = 90°). This angle of incidence is called critical angle.
Now, if you increase this angle of incidence, light ray is reflected back into the denser medium, which is called total internal reflection. The light ray is reflected every time it hits the boundary because angle if incidence is equal to angle of reflection, and is not able to come out of the medium. This phenomenon is called total internal reflection.
Optical fiber communication, brillance of diamond and formation of mirage, uses the principle of total internal reflection .
Where as Difference between apparent and real depth of a pond (option C) is based on partial internal reflection.
Cheers!!
Hi Sreelakshmi!
When light passes from one medium to other, it bends from its path which is called refraction. When a light ray passes from denser to rarer medium, at some angle of incidence it does not go out of the denser medium but just grazes along the boundary (i.e. angle of refraction = 90°). This angle of incidence is called critical angle.
Now, if you increase this angle of incidence, light ray is reflected back into the denser medium, which is called total internal reflection. The light ray is reflected every time it hits the boundary because angle if incidence is equal to angle of reflection, and is not able to come out of the medium. This phenomenon is called total internal reflection.
Optical fiber communication, brillance of diamond and formation of mirage, uses the principle of total internal reflection .
Where as Difference between apparent and real depth of a pond (option C) is based on partial internal reflection.
Cheers!!
