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QUESTION
Light of wavelength lembda is incident nirmally on a diffration gratting for which the slit spacing is equal to 3 lembda. what is the sine of angle between the second order maximum and the normal
Light of wavelength lembda is incident nirmally on a diffration gratting for which the slit spacing is equal to 3 lembda. what is the sine of angle between the second order maximum and the normal
