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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2014

  • question_answer
    A source is moving towards an observer with a speed of 20 m/s and having frequency of 240 Hz. The observer now moving towards the source with a speed of 20 m/s. Apparent frequency heard by the observer is (velocity of sound = 340 m/s)

    A) 270 Hz    

    B) 540 Hz    

    C) 135 Hz   

    D) 370 Hz

    Correct Answer: A

    Solution :

                    The apparent frequency heard by observer is given by \[\text{3}\times \text{1}{{0}^{-\text{6}}}\] \[CaC{{l}_{2}}\] \[\text{MgS}{{\text{O}}_{\text{4}}}\]


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