Infrared Radiation

Question 1

Can be seen within the EM spectrum, a form of
radiation that has a wavelength slightly longer
than the red visible light

Answer 1

IRR

Question 2

Frequency of IRR

Answer 2

7x10^14 to 400x10^14 hertz

Question 3

Wavelength of IRR

Answer 3

700 to 15,000 nm

Question 4

Near or Short IR Rays

Answer 4

770 to 4000 nm

Question 5

Far or Long IR Rays

Answer 5

4000 to 15000 nm

Question 6

IRR - A

Answer 6

770-1400nm

Question 7

IRR - B

Answer 7

1400-3000nm

Question 8

IRR – C

Answer 8

3000-10^6 nm

Question 9

Sources of IRR

Answer 9

Luminous IRR
Non-Luminous IRR

Question 10

All incandescent bodies, such as tungsten included in a glass bulb or carbon filaments producing visible
and infrared rays.

Answer 10

Luminous IRR

Question 11

a. Electric current passed through a resistance wire covered with copper tubing or insulating material like
fireclay or porcelain, generating Infrared.
b. IRR is emitted from the heated wire and the cylinder or plate, which is heated by conduction.

Answer 11

Non-Luminous IRR

Question 12

True or False:
●IRR has sufficient energy to cause thermal
agitation by molecular and atomic motion

Answer 12

True

Question 13

Penetration/Absorption: Long IRR

Answer 13

Superficial 0.1 mm

Question 14

Penetration/Absorption: Short IRR

Answer 14

Deep (3mm)

Question 15

can be seen in the non-luminous IRR

Answer 15

Parabolic Reflector