Answer to Question #21748 in Optics for Kristina

Question #21748

lights of wavelength 550 nm incidents normally on a diffraction grating with 2000 lines/cm. The ratio of transparent part a and non transparent part b is 1:2. Find:
1.the orders appearing the phenomena of missing order
2.How many orders of intensity maxima can be observed by this grating, list then one by one.
3. f the light falls on the gratings at 30 (slant up) angle to the normal , then what are the maximun orders which can be seen in both up and down directions?

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