Question

For a crystal, the angle of diffraction (2q) is 90°
and the second order line has a d value of 2.28 A.
The wavelength (in Aº) of X-rays used for Bragg's
diffraction is
(a) 1.612
(b) 2.00
(c) 2.28
(d) 4.00​

Answer 1

Explanation:

According to Bragg's equation,

$n \times wavelength = 2 \: d \: \sin( \alpha )$

$2x = 2 \times 2.28 {a}^{0}$

Therefore the wavelength of Xray used will be of 2.28A