Exam 33: The Nature and Propagation of Light

Polarized light passes through a polarizer.If the electric vector of the polarized light is horizontal what,in terms of the initial intensity I₀,is the intensity of the light that passes through a polarizer if the polarizer is tilted 22.5° from the horizontal?

A ray of light strikes a boundary between two transparent materials,and there is no transmitted ray,as shown in the figure.What can you conclude about the indices of refraction of these two materials?

What is the critical angle for light traveling from crown glass (n = 1.52)into water (n = 1.33)?

Which one of the following is an accurate statement about light?

Light consisting of a mixture of red and blue light enters a 40°,70°,70° prism along a line parallel to the side opposite the 40° vertex.The index of refraction of the prism material for blue light is 1.530,and for red light it is 1.525.What is the angle between the two emerging beams of light?

In the figure,the orientation of the transmission axis for each of three polarizing sheets is labeled relative to the vertical direction.A beam of light,polarized in the vertical direction,is incident on the first polarized with an intensity of 1000 W/m².What is the intensity of the beam after it has passed through the three polarizing sheets when θ₁ = 30°,θ₂ = 30° and ?

Unpolarized light is incident upon two polarization filters that do not have their transmission axes aligned.If of the light passes through this combination of filters,what is the angle between the transmission axes of the filters?

Unpolarized light passes through three polarizing filters.The first one is oriented with a horizontal transmission axis,the second filter has its transmission axis 25.7° from the horizontal,and the third one has a vertical transmission axis.What percent of the light gets through this combination of filters?

When light goes from one material into another material having a HIGHER index of refraction,

Light in air is initially traveling parallel to the face AC of an equilateral triangular prism,as shown in the figure.The prism is made of glass with an index of refraction of 1.52.If the light does not strike the face AC,what is the angle between the ray as it leaves the prism at face BC and the normal in air at that face?

A ray of light passes from glass into a liquid,as shown in the figure.What is the speed of the light in the liquid? (c = 3.00 × 10⁸ m/s)

A tank holds a 1.44-m thick layer of oil that floats on a 0.96-m thick layer of brine.Both liquids are clear and do not intermix.Point O is at the bottom of the tank,on a vertical axis.The indices of refraction of the oil and the brine are 1.40 and 1.52,respectively.A ray originating at O crosses the brine-oil interface at a point 0.60 m from the axis.The ray continues and emerges into the air above the oil.What is the angle that the ray in the air makes with the vertical?

The following are positioned in sequence: A source of a beam of natural light of intensity I₀; three ideal polarizers A,B,and C; and an observer.Polarizer axis angles are measured clockwise from the vertical,from the perspective of the observer.The axis angle of polarizer A is set at 0° (vertical),and the axis angle of polarizer C is set at 50°.Polarizer B is set so that the beam intensity is zero at the observer.Which of the following pairs of angles are possible axis angle settings of polarizer B?

A ray of light traveling in air strikes the surface of a certain plastic slab at 63.0° with respect to the normal in air.It travels in the plastic slab at a 30.6° angle with respect to the normal.Find the critical angle for the plastic in air.

An oil layer that is 5.0 cm thick is spread smoothly and evenly over the surface of water on a windless day.What is the angle of refraction in the water for a ray of light that has an angle of incidence of 45° as it enters the oil from the air above? (The index of refraction for the oil is 1.15,and for water it is 1.33.)

A glass plate whose index of refraction is 1.56 is immersed in a liquid.The surface of the glass is inclined at an angle of 42.0° with the vertical.A horizontal ray in the glass is incident on the interface.When the liquid is a certain alcohol,the incident ray arrives at the interface at the critical angle.What is the index of refraction of the alcohol?

A ray of light goes from one transparent material into another,as shown in the figure.What can you conclude about the indices of refraction of these two materials?

An optical fiber made of glass with an index of refraction 1.50 is coated with a plastic with index of refraction 1.30.What is the critical angle of this fiber at the glass-plastic interface?

In the figure,a laser positioned on a ship is used to communicate with a small two-man research submarine resting on the bottom of a lake.The laser is positioned 12 m above the surface of the water,and it strikes the water 20 m from the side of the ship.The water is 76 m deep and has an index of refraction of 1.33.How far horizontally is the submarine from the side of the ship?

A beam of light of two different wavelengths enters a pane of glass 3.00 mm thick at an angle of incidence of 56°.The indices of refraction for the two different colors are 1.514 and 1.528.Because of dispersion,the colored beams,although parallel,are separated by a small distance.How far apart are they?