Light passes from a material with index of refraction 1.3 into one with index of refraction 1.2. Compared to the incident ray, what happens to the refracted ray? (a) It bends toward the normal. (b) It is undeflected. (c) It bends away from the normal.

A ray of light crosses the boundary between some substance with n = 1.54 and air, going from the substance into air. If the angle of incidence is 29◦ what is the angle of refraction?   Calculate to 1decimal.

A thin beam of light makes an angle of 60° with the surface (not the normal) of a body of water (n = 1.33). Once the light beam refracts into the water what angle does the beam make with the surface of water?     30°     68°     22°     60°

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 =

A ray of light consisting of blue light (wavelength 480 nm) and red light (wavelength 670 nm) is incident on a thick piece of glass at 80°.  What is the angular separation between the refracted red and refracted blue beams while they are in the glass?  (The respective indices of refraction for the blue light and the red light are 1.4636 and 1.4561.) 0.27° 0.33° 0.36° 0.46° 0.54°

When a ray of light strikes a nonmetallic surface, some of the light is reflected and some is refracted. Brewster’s angle is the angle of incidence for which the reflected and refracted beams are 90 degrees apart. The significance of this angle is that it leads to a reflected ray which is completely polarized.(a) Sketch the incident, reflected, and refracted rays for a situation involving Brewster’s angle. (b) Compute Brewster’s angle for water. The the index of refraction of water is 1.33 and the trigonometric identity sin(90degrees −θ) = cosθ

A ray of light is incident on an air/water interface. The ray makes an angle of θ1 = 29 degrees with respect to the normal of the surface. The index of the air is n1 = 1 while water is n2 = 1.33. Write an expression for the reflection angle ψ, with respect to the surface.

A light ray in glass (refractive index 1.57) arrives at the glass-water interface at an angle of 0 = 48° with the normal. The index of refraction of water is 1.33. What is the angle of refraction @ that a refracted ray makes with the normal ? water glass O 42° O 56° O 61° O 20°