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Chapter 15: Problem 2188

Bolometer is used to detect (A) infrared rays (B) ultraviolet rays (C) x rays (D) \(\gamma\) rays

Short Answer

Expert verified
A Bolometer is a sensitive instrument used to measure the intensity of radiation by the amount of heat it produces when it is absorbed by a material. Bolometers are particularly sensitive to long-wavelength radiation, specifically infrared radiation. Thus, the correct answer is (A) infrared rays.

Step by step solution

01

Understand what a Bolometer is

A Bolometer is a sensitive instrument used to measure the intensity of radiation by the amount of heat it produces when it is absorbed by a material. It typically consists of an absorptive element connected to a thermal reservoir through a thermal link. The temperature change of the absorptive element is then measured, which is proportional to the power of the incident radiation.
02

Determine the type of radiation detected by a Bolometer

Bolometers are particularly sensitive to long-wavelength radiation, specifically infrared radiation. This is because the longer wavelengths are more readily absorbed by the material in the Bolometer, leading to a greater temperature change and thus a stronger signal. Additionally, Bolometers have been widely used in astronomical and earth remote sensing applications for detecting infrared radiation. Therefore, the correct answer is: (A) infrared rays

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Most popular questions from this chapter

A plane electromagnetic wave of wave intensity \(10 \mathrm{~cm}^{-2}\) strikes a small mirror of area \(20 \mathrm{~cm}^{2}\), held perpendicular to the approaching wave. The radiation force on the mirror will be (A) \(6.6 \times 10^{-11} \mathrm{~N}\) (B) \(1.33 \times 10^{-11} \mathrm{~N}\) (C) \(1.33 \times 10^{-10} \mathrm{~N}\) (D) \(6.6 \times 10^{-10} \mathrm{~N}\)

Energy density of an electromagnetic wave of intensity \(0.02 \mathrm{Wm}^{-2}\) is (A) \(6.67 \times 10^{-11} \mathrm{Jm}^{-3}\) (B) \(6 \times 10^{6} \mathrm{Jm}^{-3}\) (C) \(1.5 \times 10^{10} \mathrm{Jm}^{-3}\) (D) none of the above

Which of the following rays are not electromagnetic waves? (A) \(\alpha\) rays (B) \(\gamma\) rays (C) \(\beta\) rays (D) heat rays

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Unit of \(\mu_{0} \mathrm{c}\) is same as that of (A) current (B) resistance (C) electric charge (D) velocity
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