Advertisements
Advertisements
Questions
Identify the part of the electromagnetic spectrum which is suitable for radar system used in aircraft navigation.
Name the parts of the electromagnetic spectrum which is suitable for radar systems used in aircraft navigation.
Write in brief, how these waves can be produced.
Name the em waves which are suitable for radar systems used in aircraft navigation
Name an electromagnetic wave which is used in the radar system used in aircraft navigation
Advertisements
Solution
Microwaves or Radio waves are suitable for the radar system in aircraft navigation.
These rays are produced by special vacuum tubes, namely Klystrons, magnetrons and Gunn diodes.
APPEARS IN
RELATED QUESTIONS
What role dose infra-red radiation play in physical therapy?
To which part of the electromagnetic spectrum does a wave of frequency 5 × 1011 Hz belong?
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?
The small ozone layer on top of the stratosphere is crucial for human survival. Why?
What is the range of the wavelength of the following electromagnetic waves?
(a) Micro waves .
Name the radiations of wavelength just longer than 8 × 10-7m.
The X-ray beam emerging from an X-ray tube
50% of the X-ray coming from a Coolidge tube is able to pass through a 0.1 mm thick aluminium foil. The potential difference between the target and the filament is increased. The thickness of the aluminium foil that will allow 50% of the X-ray to pass through will be
The Kβ X-ray of argon has a wavelength of 0.36 nm. The minimum energy needed to ionize an argon atom is 16 eV. Find the energy needed to knock out an electron from the K shell of an argon atom.
Name the scientist who discovered Microwaves
Name the part of the electromagnetic spectrum which is:
Produced by bombarding a metal target with high electrons.
Identify the part of the electromagnetic spectrum used in (i) radar and (ii) eye surgery. Write their frequency range.
State three properties of ultra-violet radiation similar to visible light.
A radio can tune to any station in the 7.5 mHz to 12 MHz band. What is corresponding wave length band.
Identify the electromagnetic wave whose wavelength range is from about 10-3 m to about 10-1 m. Write one use of this.
Name one radiation having the wavelength longer than the wavelength of these radiations.
What happens to wavelength as the frequency of electromagnetic radiation increases?
Which set lists uses of microwaves?
Which set lists uses of ultraviolet rays?
