2021 CAIE AS & A level May June Physics Paper 13 Q. No. 30 (9702/13/M/J/21) by Sajit C Shakya

2021 CAIE AS & A level May June Physics Paper 13 Q. No. 30 (9702/13/M/J/21) by Sajit Chandra Shakya from Nepal Chapter - SUPERPOSITION OF WAVES A beam of light of a single wavelength is incident normally on a diffraction grating. The angle of diffraction  is measured for each order of diffraction n. The distance between adjacent slits in the diffraction grating is d. A graph is plotted to determine the wavelength of the light. Which graph should be plotted and how is the wavelength determined from the graph?