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प्रश्न
Name the scientist who discovered Ultraviolet rays
उत्तर
Ritter
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संबंधित प्रश्न
If the earth did not have an atmosphere, would its average surface temperature be higher or lower than what it is now?
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 ?
The X-ray beam emerging from an X-ray tube
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.
An X-ray tube operates at 40 kV. Suppose the electron converts 70% of its energy into a photon at each collision. Find the lowest there wavelengths emitted from the tube. Neglect the energy imparted to the atom with which the electron collides.
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(a) Infrared rays
(b) Ultraviolet rays
(c) γ -rays
Write one use of each of the above.
Name the radiation of the electromagnetic spectrum which is used for the following:
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Give one use of electromagnetic radiation in Ultraviolet radiation.
Choose the correct option.
Earth’s atmosphere is richest in
Answer briefly.
What is a carrier wave?
