Monochromatic Light Is Normally Incident on a Diffraction Grating That

question 76

Multiple Choice

Monochromatic light is normally incident on a diffraction grating that is 1 cm wide and has 10,000 slits.The first order line is deviated at a 30° angle.What is the wavelength of the incident light?

• A)300 nm
• B)400 nm
• C)500 nm
• D)600 nm
• E)1000 nm