MCQ
When the light source is approaching, the Doppler effect for light is known as:
- ARed Shift
- BPurple Shift
- CMaroon Shift
- ✓Blue Shift
✓
Answer
Correct option: D.
Blue Shift
Optical light with a short wavelength is blue. When the wavelength of the light gets shortened by Doppler effect, we refer to the change in the wavelength as blue shift.
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