Author Question: A 2-m-tall person viewing his full-length image in a plane mirror requires a mirror that is at least ... (Read 172 times)

lracut11 · **on:** Jul 29, 2018

A 2-m-tall person viewing his full-length image in a plane mirror requires a mirror that is at least

1) any visible size.
2) 2 m tall.
3) 1 m tall.

The size of mirror required
4) depends on how far away from it he stands.
5) does not depend on how far away from it he stands.

Question 2

A device that transforms electrical energy to mechanical energy is

1) a generator,
2) a motor,
3) a transformer,
4) any common magnet,

and a device that transforms mechanical energy into electrical energy is a
5) generator.
6) motor.
7) transformer.