Which of the following choices describes the type of image formed by a plane mirror?

Virtual, Upright and the same size

Explanation:

As we know for plane mirror we have

image distance is same as that of object distance but on opposite side of the mirror.

now for the magnification we have

since magnification is positive so it must be virtual and upright image and since the magnitude of magnification is exactly 1 so it must be of same size as that of object size

and 1and 1

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it