Which one of the following is correct relation for Bragg's law:
Correct answer: B. d sin θ = m λ /2
- A. d sin θ = m λ
- B. d sin θ = m λ /2
- C. d sin θ = 2m λ
- D. d sin θ = m+ λ /2
Explanation
The correct relation for Bragg's law is given by d sin θ = m λ /2. This formula represents the relationship between the spacing of crystal lattice planes, the angle of incidence, the wavelength of the incident light, and the order of the diffraction maximum. The other options do not accurately represent Bragg's law and are therefore incorrect.
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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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