In an interference pattern
Correct answer: C. Both dark and bright fringes are of equal width
- A. Bright fringes are wider than dark fringes
- B. Dark fringes are wider than bright fringes
- C. Both dark and bright fringes are of equal width
- D. None of these
Explanation
In a typical interference pattern created by the overlapping of coherent light waves, both bright and dark fringes are formed due to constructive and destructive interference, respectively. Under ideal conditions, these fringes are of equal width as the pattern is consistent across the interference field. Thus, Option C is correct. Options A and B are incorrect because they suggest an imbalance in the fringe widths, which does not occur in standard interference patterns. Option D is incorrect because Option C correctly describes the phenomenon.
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About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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