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प्रश्न
Identify the part of the electromagnetic spectrum which:
- produces the heating effect.
- is absorbed by the ozone layer in the atmosphere.
- is used for studying crystal structure.
Write any one method of the production of each of the above radiations.
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उत्तर
- Infrared
- Ultraviolet
- X rays
Method of production:
- Infrared: By Nernst lamp.
- Ultraviolet: By arc of mercury.
- Xray: By Coolidge tube.
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संबंधित प्रश्न
How are infrared waves produced?
Identify the part of the electromagnetic spectrum which is:
produced by bombarding a metal target by high speed electrons.
State the approximate range of wavelength associated with visible light.
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(Use Planck constant h = 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
The X-ray coming from a Coolidge tube has a cutoff wavelength of 80 pm. Find the kinetic energy of the electrons hitting the target.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
A free atom of iron emits Kα X-rays of energy 6.4 keV. Calculate the recoil kinetic energy of the atom. Mass of an iron atom = 9.3 × 10−26 kg.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
An e.m. wave exerts pressure on the surface on which it is incident. Justify.
Which is the correct ascending order of wavelengths?
What is the wavelength range of electromagnetic radiation used in radio broadcast?
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