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| 1. |
In a double-slit experiment, the fourth-order maximum for a wavelength of 450 nm occurs at an angle of theta= 90^(@). (a) What range of wavelengths in the visiblc range (400 nm to 700 nm) are not present in the third-order maxima? To eliminate all visible light in the fourth-order maximum, (b) should the slit separation be increased or decreased and (c) what least change is needed? |
| Answer» SOLUTION :(a) 600 nm, any wavelength greater than this will not be seen. Thus, `600 nm lt theta le 700 nm` are ABSENT, (b) the slit SEPARATION d NEEDS to be decreased, (C) 0.20 `mu m` | |