ELECTROMAGNETIC WAVES

Question 1

DEFINE EM WAVES

Answer 1

Electromagnetic radiations are composed of electromagnetic waves that are produced when an electric field comes in contact with the magnetic field.

Question 2

DEFINE DISPLACEMENT CURRENT

Answer 2

Displacement current definition is defined in terms of the rate of change of the electric displacement field (D).

Question 3

DEFINE CONDUCTION CURRENT

Answer 3

The current carried by conductors due to flow of
charges is called conduction current.

Question 4

LEARN MAXWELL AMPERE LAW

Question 5

USE OF RADIO WAVES

Answer 5

Cellular phones use radio waves to transmit voice communication in the ultrahigh frequency (UHF) band.

Question 6

USES OF MICROWAVES

Answer 6

IN MICRO OVENS AND IN AIR TRAFFIC CONTROL

Question 7

USES OF INFRARED RAYS

Answer 7

We use infrared radiation in many ways, including thermal imaging cameras, remote controls, fiber optic cables, infrared astronomy, and meteorology.

Question 8

RANGE OF VISIBLE RAYS

Answer 8

400 NM TO 700 NM

Question 9

ULTRA VOILET RAYS

Answer 9

UV lamps are used to kill
germs in water purifiers.
UV RAYS ARE USED IN LASIK

Question 10

USES OF X RAYS

Answer 10

X-rays are used as a diagnostic tool in medicine and as a treatment for certain forms of cancer.

Question 11

USES OF GAMMA RAYS

Answer 11

They are used in medicine to destroy cancer cells.