Answer: Wavelength decreases and photon energy increases.
- A Wavelength decreases and photon energy increases
- B Wavelength increases and energy increases
- C Wavelength decreases and energy decreases
- D All stay constant
Correct answer: A. Wavelength decreases and photon energy increases
Explanation: c = fλ, so λ = c/f decreases as f increases. Photon energy E = hf increases with frequency. Higher frequency waves are more penetrating and more dangerous (UV, X-rays, gamma).
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.