Up-vis adsorption spectra are broad band spectra. Explain
Electronic excitations are usually accompanied by vibrational transitions which are usually not resolved. As a consequence broad bands result. This is pretty much the same situation as if you investigate the infrared spectra of gases. In this case, vibrational excitations are accompanied by rotational transitions. If your spectrometer is not able to resolve the individual bands, also comparably broad bands result. On the other hand, if you have liquids or solids, these rotational transitions are no longer possible and you see solely the band of the vibrational transition.