Light from a small region of an ordinary incandescent bulb is passed through a yellow filter and then serves as the source for a Young's double-slit experiment. Which of the following changes would cause the interference pattern to be more closely spaced?
Correct answer: A. Use slits that are closer together
- A. Use slits that are closer together
- B. Use a light source of lower intensity
- C. Use a blue filter instead of a yellow filter
- D. Use a light source of higher intensity
Explanation
The spacing of interference fringes in a Young's double-slit experiment is determined by the wavelength of light and the distance between the slits. Closer slits result in a smaller separation between fringes.
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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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