8.01: Lenses: Converging Lenses

A converging lens is also known as a ____ lens.

• convex
• concave
• double
• refracted

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 real image is produced by...

• the apparent intersection and can be projected on a screen

• the actual intersection of rays and cannot be projected on a screen

• the apparent intersection of rays and cannot be projected on a screen

• the actual intersection of rays and can be projected on a screen

The point where the rays meet is known as....

• Fire

• the focus

• refraction

• Plane of the lens

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

When an object is placed between the focus and the convex lens, the image produced is ___.

• real, diminished, and inverted

• real, magnified, and inverted

• virtual, magnified, and upright

• virtual, diminished, and upright

This image is.....

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

A pin is placed 5 cm from a converging lens of focal length 10 cm. What is the image distance? What type of image is formed?

• 10 cm, real image formed

• 15 cm, virtual image formed

• 10 cm, virtual image formed

• 20 cm, real image formed

Calculate the position of an image formed by a converging lens of focal length 10 cm when the object is 15 cm from the lens. Is the image real or virtual?

• 30 cm, real image

• 3 cm, virtual image

• 33 cm, virtual image

• 13 cm, real image

An object is placed 20 cm from a convex lens of focal length 15 cm. What is the image distance and the nature of the image?

• 60 cm, real image

• 30 cm, real image

• Image not formed

• 15 cm, virtual image