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प्रश्न
Name the scientist who discovered Microwaves
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उत्तर
Hertz
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संबंधित प्रश्न
How are infrared waves produced?
Give a reason for the following:
Long-distance radio broadcasts use short-wave bands. Why?
What is the range of the wavelength of the following electromagnetic waves?
(A) Radio waves.
Name of physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 Å in vacuum.
Mark the correct options.
(a) An atom with a vacancy has smaller energy that a neutral atom.
(b) K X-ray is emitted when a hole makes a jump from the K shell to some other shell.
(c) The wavelength of K X-ray is smaller than the wavelength of L X-ray of the same material.
(d) The wavelength of Kα X-ray is smaller than the wavelength of Kβ X-ray of the same material.
Name the scientist who discovered Infra-red waves
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- Calculate the speed of the wave.
- Name the medium through which it is traveling.
Name one radiation having the wavelength longer than the wavelength of these radiations.
What happens when an electron collides with a positron?
