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प्रश्न
What are ultraviolet radiations?
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उत्तर
Ultraviolet radiations are electromagnetic waves that occur right after the violet end of the spectrum and have wavelengths shorter than the violet portion of the visible spectrum.
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संबंधित प्रश्न
Give one use of ultraviolet radiation.
Frequencies of Kα X-rays of different materials are measured. Which one of the graphs in the figure may represent the relation between the frequency v and the atomic number Z ?
Visible light passing through a circular hole forms a diffraction disc of radius 0.1 mm on a screen. If an X-ray is passed through the same setup, the radius of the diffraction disc will be
The potential difference applied to an X-ray tube is increased. As a result, in the emitted radiation,
(a) the intensity increases
(b) the minimum wavelength increases
(c) the intensity remains unchanged
(d) the minimum wavelength decreases.
Name the scientist who discovered Ultraviolet rays
Gamma rays and radio waves travel with the same velocity in free space. Distinguish between them in terms of their origin and the main application.
Give one use of electromagnetic radiation in Ultraviolet radiation.
Answer briefly.
What is a carrier wave?
Which of the following is a tool used for separating the different color wavelengths from each other?
