What happens to a bowl of hot soup when it is placed into a freezer where the air temperature is below freezing. how does this apply to an open system
answer: carrier wave
velocity is a vector which shows direction and rate of motion speed and velocity are not the same
answer : to provide heat.
infrared waves are the waves having wavelength 700 nm to 1 mm.
the most common use of infrared waves is "to provide heat" i.e. in heat-sensitive thermal imaging cameras. it is a invisible wave. it can only sensed by a sensation of warmth.
for example :
when an object is hot, it will emit energy in the form of infrared waves.
so, correct option is (b)