A Source at Rest Emits Light of Wavelength 500 Nm

question 64

Multiple Choice

A source at rest emits light of wavelength 500 nm.When it is moving at 0.90c away from an observer, the observer detects light of wavelength:

• A)26 nm
• B)115 nm
• C)500 nm
• D)2200 nm
• E)9500 nm