Light from a Laser Strikes a Diffraction Grating

question 75

Multiple Choice

Light from a laser strikes a diffraction grating.The central and first order principal maxima are separated by 0.325 m on a wall 1.00 m from the grating.Determine the distance separating adjacent slits in the grating if the wavelength of the laser light used is 454 nm.

• A)1540 nm
• B)1210 nm
• C)2200 nm
• D)1390 nm
• E)1470 nm