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Chapter 11: Problem 34

Infrared radiations are detected by (A) spectrometer (B) pyrometer (C) nanometer (D) photometer

Short Answer

Expert verified
Infrared radiations are detected by (B) Pyrometer, as it is an instrument used to measure high temperatures by observing the brightness of the heated object. It is commonly associated with the measurement of temperature, especially in remote sensing and non-contact temperature measurement systems.

Step by step solution

01

Understanding the Options

First, let's briefly understand each of the given options: (A) Spectrometer: An instrument used to measure the properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopy for producing spectral lines and measuring their wavelengths and intensities. (B) Pyrometer: An instrument used to measure high temperatures, especially in furnaces, by observing the brightness of the heated object in comparison with that of an electrically heated filament. (C) Nanometer: A unit of length in the metric system, equal to one-billionth of a meter (0.000000001 m). (D) Photometer: An instrument for measuring the intensity of light, usually by comparing it with a standard source of light or by passing it through a series of filters of known absorption.
02

Determining the Correct Instrument

From the above analysis, we can rule out the nanometer as it is a unit of length and not an instrument to detect radiations. Now, examining the remaining options (spectrometer, pyrometer, and photometer), we find that pyrometer specially deals with measuring high temperatures through brightness. Infrared radiations are commonly associated with the measurement of temperature, especially in remote sensing and non-contact temperature measurement systems. Thus, the correct instrument for detecting infrared radiations is: (B) Pyrometer

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Most popular questions from this chapter

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