Question

Bragg's law is given by which of the following equation?

• A. \( n\lambda = 2d \sin \theta \)
• B. \( n\lambda = d \sin \theta \)
• C. \( 2n \lambda = d \sin \theta \)
• D. \( n \lambda = 2d \sin \theta \)

Hint:

Bragg's law is key in determining the crystal structure using X-ray diffraction.

Answer 1

The Correct Option is A

Bragg's law describes the condition for constructive interference of X-rays scattered by a crystal lattice. The correct equation is: \[ n \lambda = 2d \sin \theta \] where \( n \) is the order of reflection, \( \lambda \) is the wavelength of the incident wave, \( d \) is the distance between the crystal planes, and \( \theta \) is the angle of incidence.
Final Answer: \[ \boxed{n \lambda = 2d \sin \theta} \]