In Young's double slit experiment, if d is the separation between slits, L is the distance of screen from the slits, then the position of m-th bright fringe ym will be
Correct answer: C. m(L λ / d), where m=0,1,2,3,...
- A. (m+1/2) L λ / d, where m=0,1,2,3,...
- B. (m-1/2) L λ / d, where m=0,1,2,3,...
- C. m(L λ / d), where m=0,1,2,3,...
- D. (m+1/2) d / L λ , where m=0,1,2,3,...
Explanation
The correct formula to find the position of the m-th bright fringe in Young's double slit experiment is m(L λ / d), where m=0,1,2,3,... This formula is derived from the principles of interference in optics. The other options provide incorrect formulas for calculating the position of bright fringes or are related to dark fringes, not bright ones.
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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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