Micro Wave


Low Frequency Radiation - Concepts
Class - 9th Aus Edu Subjects
 
 
Concept Explanation
 

Micro Wave

Microwaves are the electromagnetic waves of frequency range 1 GHz to 1000 GHz with respective wavelengths of 30 to 0.03 cm (between 1mm and 1m) . Microwaves are electromagnetic waves that travel with a speed of 3 × 108 m/s. the energy level of microwaves is  2 x 10-24- 2 x 10-22 .

  • Within this spectral domain are a number of communication systems applications that are important in both the military and civilian sectors. 
  • They are produced by special vacuum tubes, namely; klystrons, magnetrons and Gunn diodes etc.
  • Microwaves are used in Radar systems for air craft navigation.
  •   Microwaves are produced by special vacuum tubes. 
  • Microwave is a color of light, too low-energy for you to see, lower-energy even than infrared, but higher-energy than radio.
  • Microwave ovens produce large amounts of this light. 
  •  Despite the potential for near-instant snack food,
  • The first commercial Radarange microwave ovens unveiled by Raytheon in 1946 were intended for use in restaurants (as in the photo at the top, which shows a prototype called the “Raydarange”) and for reheating meals on airplanes.
  • Uses

    (i) A radar using microwave can help in detecting the speed of tennis ball, cricket ball, automobile while in motion.

    (ii) Microwave ovens are used for cooking purposes.

    .... (More Text Available, Login?)
    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    The frequency range microwave is ______________________.

    Right Option : A
    View Explanation
    Explanation
    Question : 2

    The range of the wavelength of microwaves is ________________ .

    Right Option : A
    View Explanation
    Explanation
    Question : 3

    The color of microwaves is _______________ .

    Right Option : A
    View Explanation
    Explanation
     
     


    Students / Parents Reviews [20]