Lenses, Mirrors, and Image Formation Quiz

What does the sign of the magnification (m) indicate about the orientation of the image compared to the object?

• If m < 0, the image is upright
• If m > 0, the image is inverted
• If m < 0, the image is inverted
• The sign of m has no relation to image orientation

In the magnification formula m = -di/do, why is do always positive for a single lens or mirror?

• Because the object is always real
• Because the object is always virtual
• Because the image is always real
• Because the lens is always convex

What does |m| > 1 indicate about the image compared to the object?

• The image is smaller
• The image is the same size
• The image is larger
• The image is inverted

For a concave mirror, when will the image be smaller than the object?

• When do < f
• When do = f
• When f < do < 2f
• When do > 2f

In which scenario will a converging lens produce no image?

• When do > 2f
• When do = 2f
• When do = f
• When do < f

For a diverging lens, how does the image distance (di) always compare to the object distance (do)?

• di > do
• di = do
• di < do
• di and do are unrelated

What type of image is formed when di is negative?

• Real and inverted
• Real and upright
• Virtual and inverted
• Virtual and upright

For a concave mirror, when will the image be the same size as the object?

• When do > 2f
• When do = 2f
• When f < do < 2f
• When do = f

Which type of lens or mirror always produces a virtual, upright, and smaller image regardless of object distance?

• Concave mirror
• Convex mirror
• Converging lens
• Diverging lens

What happens to the image distance (di) as the object distance (do) approaches the focal length (f) of a converging lens?

• di approaches 0
• di approaches f
• di approaches 2f
• di approaches infinity