1) Which has the longest wavelength? a) red b) Green c) blue d) orange e) violet f) yellow 2) Which has the shortest wavelength? a) red b) Green c) blue d) orange e) violet f) yellow 3) When light passes through a diffraction grating what happens? a) Reflection b) Refraction c) Interference d) Polarisation 4) If we increase the number of lines per mm on a diffraction grating what happens to the images seen? a) Get closer together b) Move further apart 5) If we change from a red laser to a green laser passing through a diffraction grating, what happens to the images seen? a) Get closer together b) Move further apart 6) More images are seen when passing a __________ through a diffraction grating. a) red laser b) blue laser 7) What do we adjust in a spectrometer to get a narrow beam of light? a) Collimator b) Telescope c) Table

Wavelength of light

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