Ch 13 Physical Science Test

2. Which lens can from virtual, erect and magnified image ?

• Convex lens

• Concave lens

• Both concave and convex lens

• None of these

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

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

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.

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

Farsightedness is normally associated with what factor?

• Age

• Diet

• Exercise

What is the focal point position in a nearsighted eye?

• In front of the retina

• Behind the retina

• On the retina

A convex mirror is:

• a mirror with a flat surface

• a mirror that curves inward

• a mirror that curves outward

• a mirror with a concave surface

The curvature of a convex lens affects the bending of light by:

• increasing the focal length, causing less bending of light

• decreasing the focal length, causing more bending of light

• having no effect on the bending of light

• causing light to bend in the opposite direction

What are some uses for convex mirrors?

• Convex mirrors are used in vehicle side mirrors to provide a wider field of view.

• Convex mirrors are used in telescopes to focus light.

• Convex mirrors are used in microscopes to magnify small objects.

• Convex mirrors are used in cameras to capture images.