A diffraction grating has 500 lines per mm. Its slit spacing or grati – McqOptions

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1.	A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?
A.	500 mm
B.	5 x 10-3 mm
C.	2 x 10-5 mm
D.	2 x 10-3 mm
Answer» E.

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