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) What is the distance between the first-order red and blue fringes? For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Diffraction grating. Express your answer to two significant figures and include the appropriate units.

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) What is the distance between the first-order red and blue fringes? For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Diffraction grating. Express your answer to two significant figures and include the appropriate units.

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