Q. With the help of which of the following equations is the distance calculated from a known wavelength of the source and measured angle?

View solution

Q. In Diffractometer, the identification of a component of the sample from its powder diffraction pattern is based upon the _________ of lines and their relative ___________

View solution

Q. When certain geometric requirements are met, X-rays scattered from a crystalline solid can constructively interfere with each other and produce a diffracted beam.

View solution

Q. Diffractometers are similar to which of the following?

View solution

Q. In Diffractometers, line intensities depend on ______ and kind of atomic reflection centres in each set of plates.

View solution

Q. In Diffractometers, the intensities of the diffraction peaks of a given compound in a mixture are proportional to the fraction of the material in the mixture.

View solution

Q. In powder diffractometer, the sharpness of the lines is greatly determined by which of the following?

View solution

Q. Absorption meter is __________ and ____________ of the chemical state of the element concerned.

View solution

Q. X-ray absorption meters have which of the following major disadvantages?

View solution

Q. The applications of X-ray absorption meters are limited when compared with X-ray emission procedures.

View solution

Q. In absorption meter, which of the following is placed between the cell and the X-ray tube?

View solution

Q. In absorption meter, which of the following is placed between the chopper and the reference cell?

View solution

Q. In absorption meter, the two halves of the X-ray beam are allowed to fall on which of the following components?

View solution

Q. The photomultiplier tube used is absorption meter is coated with which of the following materials?

View solution

Q. In absorption meter, which of the following is adjusted until the absorption of two X-ray beams are brought into balance?

View solution

Q. In absorption meter, the change in thickness of aluminium required for different samples is a function of the difference in which of the following parameters?

View solution

Q. Absorption meters cannot be used to detect broken bones.

View solution

Q. If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a long or a short time, the phenomenon is termed as which of the following?

View solution

Q. If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a short time, the phenomenon is termed as which of the following?

View solution

Q. If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a long time, the phenomenon is termed as which of the following?

View solution