Multiple Choice
A He-Ne laser (632.8 nm) is used to calibrate a grating. If the first-order maximum occurs at 20.5°, what is the grating constant (the distance between the slits) ?
A) 0.905 μm
B) 1.81 μm
C) 2.20 μm
D) 3.62 μm
E) 4.52 μm
Correct Answer:
Verified
Correct Answer:
Verified
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