Question

name the type of electromagnetic waves having a wavelength range 0.1 m to 1 mm how are these waves generated write their two uses

Answer 1

such kind of waves are known as uhf or Ultra high frequency. These waves are generated using Hugh frequency oscillator or switching ckts. They are used for cellular communication, also in wifi, Bluetooth.

Answer 2

Type  of electromagnetic waves having wavelength range 0.1 m to 1 mm is microwaves and are produced by klystron valve or magnetron valve.

These are produced by vacuum tubes devices that operate on the ballistic motion of electron controlled by magnetic or electric fields.They can also be produced by traveling wave tube(TWT) and gyrotron.

These waves work in density modulated mode rather than current modulated mode.

Uses of microwaves electromagnetic waves are:--

1)Used for point to point telecommunications.

2)Used for high data transmission.

3)T.V. and telephone communications are transmitted long distances by microwaves.

4)Microwaves are also employed in microwave ovens and in radar technology.

5)They are also be used in navigation and radio signals.