Question

In X-ray diffraction, a collimated beam of X-rays, with most appropriate wavelength ranging from .......... is incident on a specimen and is diffracted by the crystalline phases of the specimen:

• A. 0.1 to 2 Å
• B. 5 to 10 Å
• C. 10 to 20 Å
• D. 20 to 30 Å

Hint:

For X-ray diffraction, the wavelength should be similar to the spacing between atomic planes in a crystal.

Answer 1

The Correct Option is B

Step 1: X-ray diffraction principle.
X-rays with wavelengths ranging from 5 to 10 Å are ideal for X-ray diffraction as they are comparable to the lattice spacing of crystals.
Final Answer: \[ \boxed{\text{The correct answer is (2) 5 to 10 Å.}} \]