Answer the questions below concerning the following graph. What type of spectrum is shown? UV/Vis NMR IR What type of electromagnetic radiation is associated with the peak (at 278 nm)? Radio waves Infrared radiation Ultraviolet radiation. Visible light Absorbance 0.06- 0.05- 0.04 0.03 0.02- 0.01- Tryptophan 250 What is measured in this spectroscopic method? 260 the frequency that causes a nucleus to flip its spin the vibrational frequency of a bond the absorption of light energy over a specified wavelength range 270 Peak at 278 nm 280 Wavelength (nm) 290 300