An Absorption spectra is always a   …………………a.Line Spectra     b.Band Spectra c.Continuous spectra    d.All of the aboveClear my choice

An absorption spectrum can be any of the options mentioned depending on the context.

a. Line Spectra: This occurs when an atom absorbs certain frequencies of light and moves to a higher energy state. The absorbed frequencies appear as dark lines (absence of light) in the spectrum.

b. Band Spectra: This is seen in molecules where there are vibrational and rotational energy levels. The absorbed frequencies form a band of lines in the spectrum.

c. Continuous Spectra: This is seen when all frequencies of light are absorbed continuously without any gaps.

So, the answer can be d. All of the above, as an absorption spectrum can be a line, band, or continuous spectrum based on the system that is absorbing the light.