Respuesta :
Answer:
The distance between the earth and the star is increasing.
Explanation:
When we observe an object and its electromagnetic radiation has been displaced to blue, it means that it is getting closer to us, causing the light waves it emits to get closer together and its wavelength to decrease towards blue, this is knowm as blueshift.
On the contrary, when an object is rapidly moving away from us, the light waves or electromagnetic radiation it emits have been stretched from their normal wavelength to a longer wavelength, towards the red part of the spectrum. This is known as redshift.
This phenomenon of changes in wavelength and frequency due to movement (whether the source approaches or moves away) is described by the Doppler effect.
So for this case because the light we perceive from the star has moved to the red part of the visible spectrum, we can conclude that it is moving away from the earth, and that the distance between the star and the earth is increasing.
Due to the effect of electromagnetic waves, the changes are observed. 'The distance between the earth and the star is increasing'.This option is correct.
What is wavelength?
The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.
Due to electromagnetic radiation having shifted to blue, it signifies that it is approaching closer to us, causing the light waves it produces to get closer together and its wavelength to drop towards blue.
The Doppler effect describes the phenomena of variations in wavelength and frequency caused by movement.
Due to the effect of electromagnetic waves, the changes are observed. 'The distance between the earth and the star is increasing'.
Hence 'The distance between the earth and the star is increasing'.This option is correct.
To learn more about the wavelength refer to the link;
brainly.com/question/7143261
