In experiment about the light interference with Iang slit, if we do an experiment with the monochromatic light which has wavelength ?_1= 0.6 ?m, we will see 6 consecutive bright stills within 9 mm in width on the view curtain; if we do an experiment with the light which includes two radiations correlative wavelengths ?_1 and ?_2, we will see from a point M on the curtain to the center bright still having 3 other bright stills which are the same as the center still and still at M is one of 3 those stills. Tell M distance the center still as 10.8 mm. How long is a wavelength of radiation ?_2?
A. 0.38 ?m.
B. 0.65 ?m.
C. 0.4 ?m.
D. 0.76 ?m.
A. 0.38 ?m.
B. 0.65 ?m.
C. 0.4 ?m.
D. 0.76 ?m.