1) why do atoms have discrete spectral lines?
2) Is it possible for different atomic transitions, in aparticular atom, to give off the same colour photons?why?
3) A beam of red photons and blue photons are sent through adiffraction grating simultaneously. Sketch the diffraction patternof both colours.
4) The spectrometer provided is able to measure angles to aprecision of 1 minute (1'). Given that 60'=1degree, convert thefollowing angles, 31degree 21' and 12degree 5', into degrees.
