UPSC General Studies Sample Paper General Studies Sample Paper-10

  • question_answer
    Which of the following are properties of sound wave?
    1. Reflection      
    2. Superposition         
    3. Refraction                 
    4. Free vibration
    5. Resonance    
    6. Diffraction
    Select the correct answer using the codes given below.

    A)  1, 3 and 5                    

    B)  1, 2, 4 and 6       

    C)  2, 3, 5 and 6                

    D)  All of these

    Correct Answer: A

    Solution :

    [a] Sound is a vibration that propagates as a mechanics wave of pressure and displacement through some medium. The denser the medium, the more the speed of propagation of sound. Few of the properties of sound wave are reflection, refraction, resonance etc. The basic properties of sound are pitch, loudness and tone. It is measured in decibel.

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