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

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

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

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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?

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

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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?

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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?

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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?

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Q. Prompt emission of X-ray by an atom ionised by a higher energy X-ray is a type of which of the following phenomena?

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Q. The measurement of intensity of fluorescent X-rays provide a simple and ____________ way of _____________ analysis.

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Q. The energy of the emitted X-rays depends upon the _________ of the atom and their intensity depends upon the __________

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Q. Which of the following is Mosely’s equation if ‘C’ is the speed of light, ‘a’ is proportionality constant, ‘σ’ is a constant which depends on electronic transition series, ‘Z’ is the atomic number and ‘λ’ is the wavelength?

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Q. The problem of spectral interference is not severe in X-ray spectroscopy.

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Q. In X-ray fluorescence spectrometer, the relationship between the excitation intensity and the intensity of fluorescence does not depend on which of the following?

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Q. Fluorescent X-ray spectrometers would require only moderate-intensity X-ray tubes.

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Q. Which of the following components of the X-ray fluorescent spectrometer induces fluorescent radiation?

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Q. Why is a mono-energetic radiation source required in X-ray fluorescent spectrometer?

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Q. Which of the following does not make the X-ray tube nearly monochromatic?

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Q. Which of the following components make use of a thin metal foil to isolate a nearly mono-energetic excitation beam?

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Q. Energy dispersive system uses which of the following detectors?

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