ifos • paper_1 • waves_oscillationsifos-2017-subject-02-003
Plane transmission grating — UPSC IFoS 2017 Physics PYQ
Buy PYQ Solution Manual →A parallel beam of light of wavelength 5890~\text{\AA} is incident at an angle of 30^\circ on a plane transmission grating with 15000 lines/inch. Find the highest order of spectrum that can be observed.
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