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प्रश्न
How will you investigate the existence of the radiation beyond the red and violet extremes of the spectrum?
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उत्तर
If a blackened bulb thermometer is moved from the violet end towards the red end, first a steady rise in temperature is observed, but as the thermometer goes beyond the red end, there is a rapid rise in temperature. This shows the existence of some kind of radiation producing the heating effect beyond the red end of the spectrum.
If the radiations from the red end to the violet end are made to fall on the silver chloride solution, it almost remains unaffected beyond the violet end of the spectrum.
संबंधित प्रश्न
Why are microwaves considered suitable for radar systems used in aircraft navigation?
What is the range of the wavelength of the following electromagnetic waves?
(a) Infrared.
Name the waves of wavelength nearly 0.1 nm.
Can a hydrogen atom emit characteristic X-rays?
Find the energy, the frequency and the momentum of an X-ray photon of wavelength 0.10 nm.
(Use Planck constant h = 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
What potential difference should be applied across an X-ray tube to get X-ray of wavelength not less than 0.10 nm? What is the maximum energy of a photon of this X-ray in joule?
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
The Kα and Kβ X-rays of molybdenum have wavelengths 0.71 A and 0.63 A respectively. Find the wavelength of Lα X-ray of molybdenum.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
Name the part of the electromagnetic spectrum which is:
Produced by bombarding a metal target with high electrons.
Give one use of electromagnetic radiations in Infrared radiation.
Answer briefly.
What is a carrier wave?
