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                              Q:
                           
                           
                                                      | A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time | B) The intensity of light emitted by them changes with time | 
| C) The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere | D) The distance of the stars from the earth changes with time | 
                              Answer:   A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
 
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