choose the correct answer in the parenthesis   1. Light is an electromagnetic radiation that travels in a straight line at a speed of (3.0 x 108 m/sec, 3.0 x 107 m/sec). 2. It is the type of reflection wherein light hits a smooth surface then light is reflected back in a regular pattern. This reflection is called (specular, diffuse) reflection. 3. The law of reflection states that the angle of incidence is (greater than, equal to) the angle of reflection. 4. (Reflection, Refraction) is the bending of light as it passes from one medium to another of different optical density.

Two flat mirrors are connected to each other such that they make an angle of ψ. A laser enters the system and first reflects off the bottom mirror, then the top mirror. When the beam exits it makes an angle of θ = 106 degrees with respect to the initial beam (see figure). Write an expression for the angle, ψ, between the mirrors.

One well-known image of a prism is the following picture a. Given the pattern of light on the far side of the prism, is the index of refraction inside the prism higher or lower than the index of refraction outside the prism? b. List at least one thing that is wrong with this diagram given what we expect the dependence of n on the wavelength of light to be (and assuming the prism is made of a uniform material). c. List at least one thing that is right with this diagram given what we expect the dependence of n on the wavelength of light to be (and assuming the prism is made of a uniform material).

As a project, some students are planning to determine the speed of light using Michelson's speed of light apparatus (shown below). For their experiment they plan to have a distance Doe between the mirrors. For N=1, they need an angular speed of we If they decrease the distance by a factor of 2. what angular speed (in terms of se) would they need for the N=1 case? Rotating Observer Light source Stationary mirror A ASK YOUR TEACHER