Question

question 4 (0.5 points)
listen
which statement is true? as the frequency of electromagnetic radiation decreases?
energy increases
speed decreases
energy decreases
wavelength decreases
question 5 (0.5 points)
listen

Explanation:

The energy of electromagnetic radiation is directly proportional to its frequency, as described by the equation $E = h
u$ (where $E$ is energy, $h$ is Planck's constant, and $
u$ is frequency). So when frequency decreases, energy decreases. The speed of electromagnetic radiation in a vacuum is a constant ($c = 3\times10^{8}\ m/s$). Also, frequency and wavelength are inversely - related by $c=\lambda
u$, so when frequency decreases, wavelength increases.

Answer:

Energy decreases