Advertisements
Advertisements
प्रश्न
Identify the part of the electromagnetic spectrum which:
- produces the heating effect.
- is absorbed by the ozone layer in the atmosphere.
- is used for studying crystal structure.
Write any one method of the production of each of the above radiations.
उत्तर
- Infrared
- Ultraviolet
- X rays
Method of production:
- Infrared: By Nernst lamp.
- Ultraviolet: By arc of mercury.
- Xray: By Coolidge tube.
APPEARS IN
संबंधित प्रश्न
A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?
Characteristic X-rays may be used to identify the element from which they are being emitted. Can continuous X-rays be used for this purpose?
The energy of a photon of a characteristic X-ray from a Coolidge tube comes from
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 ?
Name the part of the electromagnetic spectrum which is:
Suitable for radar systems used in aircraft navigation.
Name any two electromagnetic waves which have a frequency higher than that of violet light. State one use of each.
Answer briefly.
Give two uses of ultraviolet rays.
Answer briefly.
Give two uses of radio waves.
All components of the electromagnetic spectrum in a vacuum have the same ______
Why does microwave oven heats up a food item containing water molecules most efficiently?
