Answer: 2 × 10-16 kg m/s.
- A 6 × 10-16 kg m/s
- B 1 × 10-16 kg m/s
- C 2 × 10-16 kg m/s
- D 2 × 10-15 kg m/s
Correct answer: C. 2 × 10-16 kg m/s
Explanation: For full absorption, p = U/c = (6 × 10-8)/(3 × 108) = 2 × 10-16 kg m/s.
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.