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प्रश्न
Name two electromagnetic waves of frequency smaller than that of violet light. State one use of each.
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उत्तर
1) Ultraviolet radiations - 100 Å to 4000 Å
Use: For detecting purity of gems, eggs, ghee, etc.
2) X-rays - 0.1 Å to 100 Å
Use: For detecting fracture in bones, teeth, etc.
संबंधित प्रश्न
Name the phenomenon which shows the quantum nature of electromagnetic radiation.
What do you understand by the invisible spectrum?
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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.)
Microwaves are electromagnetic waves with frequency in the range of.
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Photons of an electromagnetic radiation has an energy 11 keV each. To which region of electromagnetic spectrum does it belong?
What do electromagnetic waves require for propagation?
