Monochromatic Light Is Incident on a Grating That Is 75

question 30

Multiple Choice

Monochromatic light is incident on a grating that is 75 mm wide and ruled with 50,000 lines.The second-order maximum is seen at 32.5°.What is the wavelength of the incident light?

• A) 202 nm
• B) 403 nm
• C) 452 nm
• D) 605 nm
• E) 806 nm

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