Calculate the wavelength of the laser light for a) d  =  1/500 mm and b) d  =  1/1000 mm. Use the modified “grating
equation” given below:
nλ = d (X/L)
Remember to keep all calculations in millimeters (mm) until the end and then convert your answer to nanometers
(1 nm  =  10‐6 mm). Show all your work below:

Is the value you obtained for the wavelength of the laser light consistent with the range of wavelengths for
the red light? Explain any sources of error that might have caused a large deviation.

Question

Calculate the wavelength of the laser light for a) d  =  1/500 mm and b) d  =  1/1000 mm. Use the modified “grating
equation” given below:  
nλ = d (X/L)
Remember to keep all calculations in millimeters (mm) until the end and then convert your answer to nanometers
(1 nm  =  10‐6 mm). Show all your work below:

Is the value you obtained for the wavelength of the laser light consistent with the range of wavelengths for
the red light? Explain any sources of error that might have caused a large deviation.