Physics H - Ch 13 Light/Mirrors

Light waves

____________ do not require a medium to travel​

Reflection of light

______________ is a change in direction of the light.​

diffuse reflection

If light strikes a rough surface, the light is reflected in many different directions, called ___________________.

specular reflection

If light strikes a smooth surface, the light is directed in one direction, called __________________________.

angle of incidence

The angle that light strikes a surface is called the ______________________.

angle of reflection

The angle that light is reflected is called the___________________________.

normal

Angles of incidence and reflection are measured from the ____________, and are always equal.

normal line

the line that is perpendicular to a surface

flat mirrors

The simplest type of mirror

upright, same size, virtual

describe flat mirror image

sphere

A curved mirror is part of a ___________.

inward

Concave mirrors curve __________.

radius of curvature

the radius of the sphere that the curved mirror is a part of is called the ___________________.

real image

an image formed by the intersection of light rays. Can be projected on a screen

real and virtual

concave mirrors can produce __________ images.

Focal Length

a distance that is half of radius of curvature​

real image at f, a point

Concave mirror, object at infinity - Describe image

Real image between c and f, inverted, smaller

Concave mirror, object outside c- Describe image

real image at c, inverted, same size

Concave mirror, object at c - Describe image

real image behind c, inverted, bigger

Concave mirror, object between c and f - Describe image

image at infinity (no image)

Concave mirror, object at f - Describe image

virtual, upright image at c, bigger

Concave mirror, object inside f (between f and mirror) - Describe image

Object inside f

What is the only case that a concave mirror produces a virtual image?

convex mirrror

A spherical mirror in which light is reflected from the outer surface, also called a diverging mirror.

virtual; reduced; upright

Convex mirrors always produce a ___________ image ______________ in size. The image is always __________ in orientation.

convex

This mirror has a negative image distance and a negative focal length, and the image is upright.​

Spherical aberration

a situation in which parallel rays far from the principal axis converge aways from the focal point. This produces a blurred image.​

parabolic mirrors

curved mirrors with a small diameter. These mirrors reduce spherical aberration.​

diffuse, rough

Snow reflects almost all of the light incident upon it. However, a single beam of light is not reflected in the form of parallel rays. This is an example of ____ reflection off a ____ surface.

smooth, specular

A highly polished finish on a new car provides a _____ surface for ______ reflection.

close to the mirror's surface

When incoming rays of light strike a flat mirror at an angle close to the surface of the mirror, the reflected rays are

the angles of incidence and reflection are equal.

When a straight line is drawn perpendicular to a flat mirror at the point where an incoming ray strikes the mirror's surface, the angles of incidence and reflection are measured from the normal and

27° from the normal

If a light ray strikes a flat mirror at an angle 27° from the normal, the reflected ray will be

the same size as the object

The image of an object in a flat mirror is always

virtual, upright, and magnification equal to one

Which of the following best describes the image produced by a flat mirror?

magnification

the ratio of an object's image size to its real size

convex mirror

What type of mirror is used whenever a magnified image of an object is needed?

30 cm

If a virtual image is formed 10.0 cm along the principal axis from a convex mirrow with a focal length of -15.0cm, what is the object's distance from the mirror.

-12 cm

A convex mirror with a focal length of -20.0 cm has an object 30.0 cm in front of the mirror. What is the value of q for the corresponding image?

diffuse reflection

specular reflection

52°, accodring to the law of refleciton, the angle of incidence is equal to the angle of reflection

If a light ray strikes a flat mirror with an angle of incidence equal to 52°, what is the angle of reflection?

the law of reflection

the angle of incidence is equal to the angle of reflection

Flat mirrors will always form a virtual image that appears to originate behind the mirror.

When drawing a ray diagram of a flat mirror, why are the reflected rays traced back to a point behind the mirror?

principal axis

The focal point and center of curvature of a spherical mirror all lie along the ____________________.

back along itself through c

A line is ran from the object to a spherical mirror and passes through the center of curvature. How should the reflected ray be drawn?

virtual

What kind of images do flat mirrors always form?

real images can be displayed on a surface; virtual ones can't.

What is the main difference between real and virtual images?