# physics

total internal reflection between two materials is seen to occur if a critical angle of 60 degrees is exceeded. if the index of refraction of the material that the light is entering is 1.98,find the inndex of refraction of the material in which the light is originating.

1. Snells Law says that, for the limiting critical reflection angle,
1.98 sin 60 = N2*sin 90 = N2
N2 = 1.715

posted by drwls

## Similar Questions

1. ### Physics

Light travels in a line of optical fiber by total internal reflection between a core of refractive index 1.48 and a cladding 1.46 refractive index. The critical angle for total internal reflection to occur inside the core of the
2. ### physics

A diver, below the surface of a lake, notices that no light appears to be coming toward her greater than the angle è, measured from the vertical. If the index of refraction of water is 1.33, what is the angle è (which is the
3. ### physics

Optical fibers are devices used for guiding light in many applications, most notably for fast communication. A fiber consists of a glass cylinder surrounded by a wall covered in a special coating. The fibers work on a principle
4. ### Physics

Optical fibers are devices used for guiding light in many applications, most notably for fast communication. A fiber consists of a glass cylinder surrounded by a wall covered in a special coating. The fibers work on a principle
5. ### heeeeeeeeelp math

Optical fibers are devices used for guiding light in many applications, most notably for fast communication. A fiber consists of a glass cylinder surrounded by a wall covered in a special coating. The fibers work on a principle
6. ### physics

Hi! could anyone please help me with this problem. Thank you so much. Q: The critical angle for total internal reflection for ice surrounded by air is 49.8°. Calculate the Brewster angle for ice if the light is incident from the
7. ### mathematics, science, accounting

Can a right-angled prism of clear ice be used for total internal reflection of right through 90degrees, bearing in mind that Ice has a critical angle of 48,8degrees?
8. ### physics

For a glass lens submerged in water (n=1.33), the critical angle of incidence at which total internal reflection begins to happen is 60.1 degrees. What is the index of refraction of the glass?
9. ### Physics

An optical fiber is a flexible, transparent fiber devised to transmit light between the two ends of the fiber. Complete transmission of light is achieved through total internal reflection. This problem aims to calculate the
10. ### Physics

An optical fiber is a flexible, transparent fiber devised to transmit light between the two ends of the fiber. Complete transmission of light is achieved through total internal reflection. This problem aims to calculate the

More Similar Questions