Blueshift is observed when(1 point)

Question

Responses

a luminous object is stationary compared to an observer.
a luminous object is stationary compared to an observer.

a distant luminous object travels rapidly away from an observer.
a distant luminous object travels rapidly away from an observer.

a distant luminous object travels rapidly towards an observer.
a distant luminous object travels rapidly towards an observer.

a luminous object travels alongside an observer.

Answer 1

Blueshift is observed when:

a distant luminous object travels rapidly towards an observer.

This phenomenon occurs because the wavelengths of light emitted by the object are compressed as it moves closer, resulting in a shift toward the blue end of the spectrum.