Physics, 06.11.2019 02:31, tristan4233

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red) and 486 nm (blue). light from a hydrogen lamp illuminates a diffraction grating with 520lines/mm , and the light is observed on a screen 1.5m behind the grating.
what is the distance between the first-order red and blue fringes?
express your answer to two significant figures and include the appropriate units.

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The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red)...