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 530 lines /mm , and the light is observed on a screen 1.2 m behind the grating. For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Diffraction grating. v PartA What is the distance between the first-order red and blue fringes? Express your answer with the appropriate units. - 0@ d= 12 cm m Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining