Refraction through Lenses

This image is.....

• inverted and smaller
• inverted and larger
• not inverted and smaller
• not inverted and larger

An incident ray that is parallel to the principal axis...

• will reflect parallel to the principal axis
• will refract through the focal point
• will reflect through the center of curvature
• will continue along the same path through the lens

a real image...

• is produced by virtual rays and can be projected on a screen
• is produced by real rays and cannot be projected on a screen
• is produced by virtual images and cannot be projected on a screen
• is produced by real rays and can be projected on a screen

What is Nearsightedness? 

• condition that has difficulty seeing things that are close 
• condition that has difficulty seeing things that are far away

The focal length of this lens is _______.

• negative because it can form real images

• positive because it can form real images

• negative because it can form virtual images

• could be positive or negative depending on the image formed

A person standing in front of a lens creates an image that is both smaller than the original and closer to the lens. Classify the image formed in this scenario.

• real, inverted

• real, upright

• virtual, inverted

• virtual, upright

Which describes a convex lens?

• triangular in shape
• more transparent in the middle
• thicker on the edges than in the middle
• thicker in the middle than on the edges

A converging lens is also known as a ____ lens.

• convex
• concave
• double
• refracted

What type of lens do you have in your eye?

• Concave

• Prismatic

• Objective

• Convex

When an object is placed on the focal point in front of a convex lens, the image produced is ___.

• real, reduced, and inverted
• real, enlarged, and inverted
• real, true, and inverted
• There is no image