Exam 7: Optics and Wave Effects

An example of a converging spherical mirror is a

For normal vision,an object can be seen clearly when it is beyond the ______________.

An object 30 cm in front of a concave spherical mirror (f = 10 cm)is moved toward the mirror until it is 20 cm from it.Sketch ray diagrams for these cases and estimate the factor by which the image magnification changes.

A change in the direction of a wave as a result of its encountering a sharp edge or a slit is called ______________.

A(n)______________ image is defined as one that cannot be brought to a focus on a screen.

A lens that is thicker at the edge than at the center is

A(n)______________ consists of many narrow parallel slits very close together.

The photoreceptors responsible for "twilight" vision are called

An example of a diverging spherical mirror is

An object is placed 5 cm to the left of a converging spherical lens.The lens has a focal length of f = 10 cm.What kind of image is formed and what is its orientation?

The trapping of light in "light pipes," or fiber optics,is due to

The observation of a "wet spot" on a hot highway in the summer is caused by

A plane mirror stands vertically on a table.A ruler lies on the table in such a position as to make an angle of 30° with the mirror.Determine the angle between the ruler and its image.

The photoreceptors responsible for color vision are called

A rainbow results from

When light enters a denser medium and is refracted,

For total internal reflection,light is ______________ and none is ______________.

The separation of white light into its component colors is called

Images of objects are formed by lenses because of

A diverging lens produces an image of a real object.This image is