Question

Which are characteristics of concave mirrors? Check all that apply.

surface curves inward
image can be upside down
image is always virtual
surface curves outward
image can be real

Answer 1

Correct choices:
- surface curves inward — yes (concave = cave-like, inward curve)
- image can be upside down — yes (for objects beyond the focal point the image is real and inverted)
- image can be real — yes (when the object is outside the focal length)

Incorrect:
- image is always virtual — no (only virtual when object is inside the focal length)
- surface curves outward — no (that describes a convex mirror)