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RAJASTHAN PMT Rajasthan - PMT Solved Paper-1996

  • question_answer
    A rocket is approaching on the moon with a velocity\[\upsilon \]. The astronaut in rocket sends electromagnetic signals of frequency \[\upsilon \] towards the moon and receives the signals after signals being reflected by the moon. The observed change in frequency will be:

    A) \[\frac{Cv}{C-\upsilon }\]                                            

    B)        \[\frac{Cv}{C-2\upsilon }\]                          

    C)        \[\frac{2v\upsilon }{C}\]                                              

    D)        \[\frac{2Cv}{\upsilon }\]

    Correct Answer: C

    Solution :

    Apparent frequency \[\Delta n=\frac{2v}{\upsilon }\times n\] \[\Delta n=\frac{2v\,\,\upsilon }{c}\]


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