Multiple Choice
A discharge tube is known to produce two spectral lines,one at 640 nm and the other at 640.4 nm.The total number of rulings that a grating must have to just resolve these lines in the second order is
A) 400
B) 800
C) 1600
D) 3200
E) 6400
Correct Answer:
Verified
Correct Answer:
Verified
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