Question

The correct relation between the angle of diffraction $\varphi$ and the glancing angle $\theta$ in Davisson - Germer experiment will be

• A. $\theta =90^o-\frac{\varphi }{2}$
• B. $\varphi =\frac{\theta }{2}-90^o$
• C. $\theta =90^o-\varphi$
• D. $\varphi =90^o-\theta$

Answer 1

Answer: (A)

From the diagram, $\theta =90^o-\frac{\varphi }{2}$