2. Solved Papers
  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2001

  • question_answer
    A source of frequency 150 Hz is moving in the direction of a person with a velocity of 110 m/s. The frequency heard by the person will be (speed of sound medium = 330 m/s)

    A)  225 Hz          

    B)  250 Hz

    C)  495 Hz          

    D)  None of these

    Correct Answer: A

    Solution :

     \[n'=n\left( \frac{v}{v-{{v}_{s}}} \right)\] \[=150\left( \frac{330}{330-110} \right)\] \[=225Hz\]


You need to login to perform this action.
You will be redirected in 3 sec spinner