# The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656...

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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 550 lines/mm, and the light is observed on a screen 1.4 m behind the grating Part A You may want to review (Page 940) For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Diffraction 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. d= 0.16 m Submit Previous Answers Request Answer * Incorrect; Try Again; One attempt remaining

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