In Young's Double Slit Experiment, slit separation x = 0.05 cm, the distance between screen and slit D = 200 cm, fringes separation x = 0.13 cm, then the wavelength 'λ' of light is:
Correct answer: B. λ = 3.25 x 10^-4 m
- A. λ = 1.23 x 10^-2 m
- B. λ = 3.25 x 10^-4 m
- C. λ = 4.55 x 10^-5 m
- D. λ = 5.1 x 10^-7 m
Explanation
In Young's Double Slit Experiment, the fringe separation (β) is given by:β=λD/xGiven:β=0.13 cm=0.0013 mx=0.05 cm=0.0005 mD=200 cm=2 mλ=0.0013×0.0005/2=3.25×10−7 m
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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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