B1. When the "Location of Object" is "on f", what is the "Location of Image"? *

outside 2
on 2f
between f' and 2f
On f'
Inside f'
on the same side of the lens as the object

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

in physics zero. in muscle fatigue could be high

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.