1.) Light travels through a material at a speed of 1.20x108 m/s. What is the index of refraction for the material?
2.) A diver shines a flashlight upward from beneath the water (n=1.33) at an angle of 22.4° to the vertical. At what angle does the light refract through the air above the surface of the water?
3.) A 0.17 m tall object is placed 0.49 m from a converging lens with a 0.12 m focal length. How tall is the image?
4. A physics class is investigating the properties of light using polarizing filters. The students change the orientation of the two filters to see how much light can travel through both filters.
To completely block the light, which orientation should the students use for the two filters?
Filter A should be vertical and Filter B should be horizontal.
5.) A converging lens can produce both real and virtual images depending on the object's position. When does a converging lens produce a virtual image? Describe the image produced.
A virtual image is produced if the object is on the focal point; the image is inverted, enlarged, and on the opposite side of the lens from the object.


A virtual image is produced when the object is on the focal point; the image is upright, enlarged, and on the same side of the lens as the object.


A virtual image is produced if the object is between the focal point and the lens; the image will be upright, enlarged, and on the same side of the lens as the object.


A virtual image is produced if the object is between the focal point and the lens; the image will be upright, reduced, and on the opposite side of the lens from the object.


Filter A should be vertical and Filter B should be at a 45 degree angle.


Filter A should be vertical and Filter B should be at a 60 degree angle.


Filter A should be vertical and Filter B should be vertical.

6.) A student in a physics classroom measured the distance from a convex lens (focal length of 4cm) to the object as 20 centimeters. The distance from the lens to the image projected on a screen is 5 centimeters from the lens. What is the magnification of the image?
7.) Which statement given BEST describes what happens to light as it passes from air into a piece of glass?
The speed increases, its wavelength becomes longer, and its frequency remains the same.


The speed decreases, its wavelength becomes shorter, and its frequency increases.


The speed decreases, its wavelength becomes shorter, and its frequency remains the same.


The speed increases, its wavelength becomes longer, and its frequency decreases.
8.)