You can determine the index of refraction of a substance by determining its critical angle. (a) What is the index of refraction of a substance that has a critical angle of 68.4º when submerged in water? What is the substance, based on Table 25.1? (b) What would the critical angle be for this substance in air? What are the governing principles for this problem? What equations can I use to describe what is happening here?

A ray of light travels from air into another medium, making an angle of ?1 = 45.0° with the normal as in the figure below.   (a) Find the angle of refraction ?2 if the second medium is flint glass.   (b) Find the angle of refraction ?2 if the second medium is fluorite.   (c) Find the angle of refraction ?2 if the second medium is glycerine.

Part of your refraction experiment is on performing a total internal reflection. You measure the critical angle for some oil as 40o. Therefore the refractive index of that oil should be Group of answer choices 2.02 1.56

A ray of light traveling in air is incident at angle ua on one face of a 90.0° prism made of glass. Part of the light refracts into the prism and strikes the opposite face at point A. If the ray at A is at the critical angle, what is the value of θa?

Suppose you have an unknown clear substance immersed in water, and you wish to identify it by finding its index of refraction. You arrange to have a beam of light enter it at an angle of 45.0° with respect to the normal, and you observe the angle of refraction to be 40.3°. A. What is the index of refraction of the substance?  B. What is its likely identity?

Part (b)  Numerically, what is the angle in degrees?  θ2=  Part (c)  Write an expression for the reflection angle ψ, with respect to the surface.  ψ =   Part (d)  Numerically, what is this angle in degrees?  ψ =

You are using a transparent tube as an optical fiber in open air (n air=1.00) you have calculated that the critical angle for the fiber is 34.5. a) what is the index of refraction of your optical fiber? b)to make your fiber more durable, you encase it in a cladding with an index of refraction equal to 1.35. Will the beam be reflected into the fiber or will it leak into the cladding when the incident angle inside the fiber is 50.

You can determine the index of refraction of a substance by determining its critical angle. (a) What is the index of refraction of a substance that has a critical angle of 51.0° when submerged in carbon tetrachloride, which has an index of refraction of 1.461? (b) What would the critical angle be for this substance in air?