Constants | PeriodPart AA 650 lines/mm diffraction grating is in an empty aquarium tank. Theindex of refraction of the glass walls is nelass = 1.50. A helium-neonlaser (A = 633nm) is outside the aquarium. The laser beam passesthrough the glass wall and illuminates the diffraction grating.What is the first-order diffraction angle of the laser beam?Express your answer with the appropriate units.HẢ?O = 20.76SubmitPrevious Answers Request AnswerX Incorrect; Try Again; 5 attempts remainingPart BWhat is the first-order diffraction angle of the laser beam after the aquarium is filled with water ( nwater = 1.33)?Express your answer with the appropriate units.?01 =ValueUnitsSubmitRequest Answer

Given,N=650 lines/mmnglass=1.50λ=633 nm

Answered: Part A A 650 lines/mm diffraction…

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