question_answer

Three observers A, B and C measure the speed of light coming from a source to be \[{{v}_{A}}\], \[{{v}_{B}}\] and \[{{v}_{C}}\]. The observer A moves towards the source, the observer C moves away from the source with the same speed. The observer B stays stationary. The surrounding space is vacuum everywhere. Then                                      [KCET 2002]

A)            \[{{v}_{A}}>{{v}_{B}}>{{v}_{C}}\]                                    

B)            \[{{v}_{A}}<{{v}_{B}}<{{v}_{C}}\]

C)            \[{{v}_{A}}={{v}_{B}}={{v}_{C}}\]                                    

D)            \[{{v}_{A}}={{v}_{B}}>{{v}_{C}}\]