The lenses explode. We just did this. If you must try it, make sure you have a back up pair.
It is refracted
It crackles and pops. You would probably have to get a new microwave if you attempted this at home.
If the microwave is not energized, then the food will spoil. If the microwave is energized, then the food will burn.
nothing would happen the microwave does not know if there is anything in there or not.
Nothing
Boom.
it gets nuked
Putting things with metal in a microwave causes sparks to fly.
There are no dangers of putting a baby's bottle in the microwave.
xdunno
nothing good
The human will be cooked from the inside out.