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प्रश्न
Identify the electromagnetic wave whose wavelength range is from about 10-3 m to about 10-1 m. Write one use of this.
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उत्तर
Microwaves are electromagnetic waves with wavelengths of 10-3 m < λ < 10-1 that are utilised in radar, microwave telephony, and microwave ovens, among other things.
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संबंधित प्रश्न
The terminology of different parts of the electromagnetic spectrum is given in the text. Use the formula E = hv (for energy of a quantum of radiation: photon) and obtain the photon energy in units of eV for different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation?
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- Name the two waves.
- Compare the speeds of these waves when they travel in vacuum.
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Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristic K or L X-ray. The energy levels of the tungsten atom with an electron knocked out are as follows.
| Cell containing vacancy | K | L | M |
| Energy in keV | 69.5 | 11.3 | 2.3 |
Name the scientist who discovered radio waves
Name the scientist who discovered Ultraviolet rays
How will you investigate the existence of the radiation beyond the red and violet extremes of the spectrum?
State three properties of infrared radiations similar to that of visible light.
Name one radiation having the wavelength longer than the wavelength of these radiations.
