Which one of the following is not a source of infrared radiation?

Aeronautical & Aerospace Engineering : Avionics - Quiz(MCQ)

Sun

Books

Light bulbs

Human bodies

Correct Answer : Books

Explanation : Infrared radiation is generally associated with heat. Infrared is produced by light bulbs, human bodies, and basically any physical equipment that generates heat.

Recently Updated in Avionics Questions

The maximum peaks of an electromagnetic wave are separated by a distance of 8 in. What is the frequency?

256.4Khz

256.7Mhz

1477.8Khz

1477.8Mhz

Correct Answer : Option (D) : 1477.8Mhz

Explanation : Wavelength =8 in.= 0.203 m
Frequency = 300/0.203 = 1477.8Mhz.

SHF Em waves are used in?

Underwater communication

Satellite communication

Aircraft to ATC communication

Ground to ground communication

Correct Answer : Option (B) : Satellite communication

Explanation : SHFs or Super High Frequency EM waves are those which lie between the frequency range of 3 to 30GHz range. These microwaves frequencies are widely used in satellite communication and radar.

Which one of the following is not a source of infrared radiation?

Sun

Books

Light bulbs

Human bodies

Correct Answer : Option (B) : Books

Explanation : Infrared radiation is generally associated with heat. Infrared is produced by light bulbs, human bodies, and basically any physical equipment that generates heat.