Answer:
A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex or concave. Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices.
Explanation:
Answer:
no
Explanation
non-metal and metal are two different things
Answer:
its "up, then down, then up"
Explanation:
Answer:
meter i guess
Explanation:
cause for length,the SI unit is meter
