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. Central fringes are brighter than the outer
Explanation
Interference patterns exhibit a specific relationship between the widths of dark and bright fringes. In this context, both dark and bright fringes are of equal width. This phenomenon arises from the constructive and destructive interference of light waves. Dark fringes occur where destructive interference cancels out light, while bright fringes result from constructive interference reinforcing light. Therefore, the correct answer is that both dark and bright fringes are of equal width. The other options are incorrect because they do not accurately describe the typical characteristics of interference patterns.
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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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