Ch 13 Physical Science Test

A plane mirror is:

• a mirror with a flat reflective surface

• a mirror with a curved reflective surface

• a mirror that magnifies objects

• a mirror that distorts images

A virtual image is:

• an image formed by actual convergence of light rays.

• an image that can be projected on a screen.

• an image formed by the apparent divergence of light rays.

• an image that is always inverted.

What is a concave mirror?

• A mirror with a flat surface

• A mirror with a surface that curves inward

• A mirror with a surface that curves outward

• A mirror that reflects light in parallel lines

An optical axis is:

• is an imaginary straight line perpendicular to the mirror

• a type of lens used in optical systems

• a measurement of light intensity

• a method for focusing light

What is the focal point?

• is the point where light converges after they reflect off a mirror

• is the point where light diverges after they reflect off a mirror

• The lighting in an image

• The color scheme of an image

The focal length is:

• The distance from center of mirror to the focal point

• The distance between mirror and optical axis

• The distance between the lens and the object

• The thickness of the lens

What happens to the images when a reflection comes off a concave image?

• The images become larger and inverted.

• The images become smaller and upright.

• The images remain the same size and orientation.

• The images disappear completely.

What is a real image?

• An image formed by actual convergence of light rays

• An image that cannot be projected on a screen

• An image that is always upright

• An image that is virtual

A _________ is when light is reflected off a concave mirror and the light is at the focal point.

A concave mirror does what to an object if the object is moved closer to the mirror?

• Magnifies the object

• Reduces the object

• Inverts the object

• No change