How_many_diffraction_gratings_are_used_by_interferometer_in_grazing_in – McqOptions

MCQOPTIONS

1.	How_many_diffraction_gratings_are_used_by_interferometer_in_grazing_incident_technique_with_laser_beam_system?$
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

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