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In the Young's double slit experiment, and interference pattern of bright and dark fridges was formed as shown in Figure 1 by a light of wavelength coming from two narrow slits X and Y.

      

In the Young's double slit experiment, and interference pattern of bright and dark fridges was formed as shown in Figure 1 by a light of wavelength coming from two narrow slits X and Y.
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(i) Explain how the dark and bright fringes are formed.
(ii) State and explain what would be observed on the screen if the slits X and Y were made large.

  

Answers


John
(i) - Dark fringes are formed as result of destructive interference when a crest of one wave and a trough of another wave arrive at the same point at the same time.

- Bright fringes are formed as a result of constructive interference where crests arrive at the same point at the same time

(ii) There will be no interference pattern because no diffraction takes place.
johnmulu answered the question on May 26, 2017 at 08:39


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