Question

Name the parts of the electromagnetic spectrum which is
(i) Suitable for radar systems used in aircraft navigation.
(ii) Used to treat muscular strain.
(iii) Used as a diagnostic tool in medicine.
Write in brief, how these waves can be produced.

Answer 1

(a) Microwaves are used for radar system in air craft navigation. Source of their production is oscillating currents in special vacuum tubes like klytrons, magnetrons, & gunn diodes.

(b) Infrared rays are used to treat muscular strain.

Source of the rays are vibrations of atoms & molecules in hot bodies.

(c) X-rays are used as diagnostic tool in medicine.

Source of the rays are fast moving electrons striking a metal target with high atomic mass in X ray tubes.