The graph shows the spectral intensity of electromagnetic radiation emitted by a blackbody plotted against wavelength at a constant initial temperature.
The temperature of the blackbody is now decreased.
Which row correctly describes the change in the peak frequency (fpeakf_{\text{peak}}fpeak) of the emitted radiation and the change in the spectral intensity of the radiation within the long-wavelength infrared region?
Peak frequency decreases; spectral intensity decreases
Peak frequency decreases; spectral intensity increases
Peak frequency increases; spectral intensity decreases
Peak frequency increases; spectral intensity increases