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28. White light falls normally on a diffraction grating (A=570 nm) that will appear at a larger angle (1) m=1 (2) m=2 having 3000 lines/mm. Which is the lowest order m of green light than the subsequent order m +1 of violet light (A= 400 nm)? (3) m-3 (4) m = 4 (5) This can never happen.

28. White light falls normally on a diffraction grating (A=570 nm) that will appear at a larger angle (1) m=1 (2) m=2 having 3000 lines/mm. Which is the lowest order m of green light than the subsequent order m +1 of violet light (A= 400 nm)? (3) m-3 (4) m = 4 (5) This can never happen.

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28. White light falls normally on a diffraction grating having 3000 lines/mm. Which is the lowest order m of green light (A=570 nm) that will appear at a larger angle 0 than the subsequent order m + 1 of violet light (A= 400 nm)? (1) m = 1 (2) m = 2 (3) m = 3 (4) m = 4 (5) This can never happen.
Transcribed Image Text:28. White light falls normally on a diffraction grating having 3000 lines/mm. Which is the lowest order m of green light (A=570 nm) that will appear at a larger angle 0 than the subsequent order m + 1 of violet light (A= 400 nm)? (1) m = 1 (2) m = 2 (3) m = 3 (4) m = 4 (5) This can never happen.
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