Question

which is true of heat transfer by radiation
a. radiant heat travels in curved lines.

b. radiant heat always travels upward.

c. radiant heat can pass through any object

d. radiant heat can travel across empty space.

Answer 1

Answer:

D

Rest of the options do not resemble radiant heat

Answer 2

Radiant heat can travel across empty space. (Option D)

• When heatwaves are emitted that may be absorbed, reflected, or transmitted through a colder body. This process is termed Radiation heat transfer.
• Thermal radiation is the emission of energy as electromagnetic waves.
• Radiation is the only type of heat that can happen in a vacuum.
• Can also be important in nature convection problems.
• Radiation heat transfer is difficult to solve. We must rely on computational methods.