2. Questions Bank
  3. 9th Class
  4. Science
  5. Sound

9th Class Science Sound Question Bank Sound Summative Objective Problems

  • question_answer
    If 25 second wave are produced per second, what is the frequency in hertz?

    A)  25 Hertz             

    B)  50 Hertz

    C)  15 Hertz                             

    D)  75 Hertz

    Correct Answer: A

    Solution :

      Not Available    


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