Answer: Both energy and momentum.
- A Both energy and momentum
- B Electric charge only
- C Rest mass only
- D Neither of these
Correct answer: A. Both energy and momentum
Explanation: EM waves carry energy and also linear momentum, which is why they exert radiation pressure on surfaces they strike. They carry no charge or rest mass.
In an electromagnetic wave, the oscillating electric field (E) and magnetic field (B) are perpendicular to each other and to the direction the wave travels - a purely transverse wave that needs no medium, unlike sound.
Concept context
Maxwell's equations, EM spectrum, properties, and applications of each band.