Two stars orbiting one another. The diagram
shows the orbital motion of one of the stars, and
...
![Physics](/tpl/images/cats/fizika.png)
Two stars orbiting one another. The diagram
shows the orbital motion of one of the stars, and
four different positions are marked (A, B, C, D).
At which position is the light from the star
redshifted? blueshifted? not shifted at all? D
a) A, C, B/D
b) C, A, B/D
c) B, D, A/C
d) D, B, AC
B
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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