Can you help me with this hw question?Due to the Doppler effect, waves from an approaching source (moving toward the observer) are observed as having a shorter wavelength than when they were emitted. Which of the following pairs could represent the kind of radiation emitted from a source rapidly approaching Earth and the kind of radiation it is detected as on Earth?Aemitted as a gamma ray, observed as ultraviolet lightBemitted as a microwave, observed as a radio waveCemitted as yellow light, observed as blue lightDemitted as ultraviolet light, observed as infrared radiation
