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Ex4 - 9702/23/M/J/17: (a) A diffraction grating is used to determine the wavelength of light. (i) Describe the diffraction of light at a diffraction grating (ii) By reference to interference, explain 1. the zero order maximum, 2. the first order maximum (b) A diffraction grating is used with different wavelengths of light. The angle θ of the second order maximum is measured for each wavelength. The variation with wavelength λ of sin θ is shown in Fig. 5.1. (i) Determine the gradient of the line shown in Fig. 5.1. (ii) Use the gradient determined in (i) to calculate the slit separation d of the diffraction grating. (iii) On Fig. 5.1, sketch a line to show the results that would be obtained for the first order maxima. #9702s17p23 #ASdiffractionGratingP2 #ASphysicsGraphsP2 #Lv2 AS #Superposition Playlist: • Ch8 Superposition | CAIE 9702 AS Physics AS #Waves Playlist: • Ch7 Waves | CAIE 9702 AS Physics Instagram Pocket Guide ( / etphysics ) More Resources (https://9702-physics.blogspot.com/) Support us! ( / etphysics ) Tuition/Tutoring inquiries: Email: [email protected] Whatsapp: https://wa.me/60126679171 9702_s17_qp23 #CambridgeALevelPhysics
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