A parallel beam of monochromatic light falls normally on a single narrow slit. How does the angular width of the principal maximum in the resulting diffraction pattern depend on the width of the slit?
Answers
It is true that the monochromatic light's parallel beam normally falls on a single and narrow slit. Principal maxima's angular width is inversely comparative to the slit width.
If we want to look at the example of it then we can refer to the image shown below where d is described as a slit width:
Heyyy your answer:
A parallel beam of monochromatic light falls normally on a narrow slit of width'a' to produce a diffraction pattern on the screen placed parallel to the plane of the slit. Use Huygens principle to explain that (i) the central bright maxima is twice as wide as the other maxima. (ii) the intensity falls as we move to successive maxima away from the centre on either side.Read more on Sarthaks.com - https://www.sarthaks.com/181423/parallel-beam-monochromatic-light-falls-normally-narrow-slit-widtha-produce-diffraction
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