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प्रश्न
Name two sources of infrared radiation.
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उत्तर
(i) Infrared lamp, (ii) Fire.
संबंधित प्रश्न
When a Coolidge tube is operated for some time it becomes hot. Where does the heat come from?
Characteristic X-rays may be used to identify the element from which they are being emitted. Can continuous X-rays be used for this purpose?
For harder X-rays,
(a) the wavelength is higher
(b) the intensity is higher
(c) the frequency is higher
(d) the photon energy is higher.
Name the scientist who discovered radio waves
Give one use of electromagnetic radiation in Ultraviolet radiation.
Give one use of electromagnetic radiations in Infrared radiation.
Name the radiations used for the detection of fracture in bones.
An electron beam is accelerated by a potential difference V to hit a metallic target to produce X-rays. It produces continuous as well as characteristic X-rays. If λmin is the smallest possible wavelength of X-ray in the spectrum, the variation of log λmin with log V is correctly represented in:
If λv, λx and λm Am represents the wavelength of visible light, x-ray and microwaves respectively, then ______.
Name one radiation having the wavelength longer than the wavelength of these radiations.
