Bragg's Law for measurement of wavelength à. of i-rays, using crystal lattice planes having distance d between each other, for constructive interference for integral multiple of i is.
Correct answer: C. mλ = 2d sinθ
- A. mλ = 2d/ sinθ
- B. 2λ =md sinθ
- C. mλ = 2d sinθ
- D. dλ = 2m sinθ
Explanation
nλ=2d⋅sinθ where • n is an integer determined by the order given, • λ is the wavelength of x-rays, and moving electrons, protons, and neutrons, • d is the spacing between the planes in the atomic lattice, and • θ is the angle between the incident ray and the scattering planes.
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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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