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प्रश्न
Give one use of electromagnetic radiations in Infrared radiation.
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उत्तर
Infrared radiations are used as signals during the war.
संबंधित प्रश्न
Name the high energetic invisible electromagnetic waves which help in the study of the structure of crystals
What do you understand by the statement, "Electromagnetic waves transport momentum"?
What is the range of the wavelength of the following electromagnetic waves?
(a) Gamma rays.
Which part of electromagnetic spectrum is used in radar systems?
An X-ray beam can be deflected
Iron emits Kα X-ray of energy 6.4 keV. Calculate the times taken by an iron Kα photon to cross through a distance of 3 km.
(Use Planck constant h = 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
The wavelengths of Kα and Lα X-rays of a material are 21.3 pm and 141 pm respectively. Find the wavelength of Kβ X-ray of the material.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
Answer briefly.
Name the most harmful radiation entering the Earth's atmosphere from outer space.
If the Earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.
All components of the electromagnetic spectrum in a vacuum have the same ______
