UPSC General Studies Sample Paper General Studies Sample Paper-3

  • question_answer
    Consider the following statements regarding seismic waves.
    1. There are two types of body waves. They are called P and S waves.
    2. The P-waves are similar to light waves and S-waves are similar to sound waves.
    3. The P-waves are slower than S-waves.
    4. P-waves can travel through gaseous, liquid and solid materials while S-waves can travel only through solid materials.
    Which of the statements given above are correct?

    A)  1, 2 and 3                    

    B)  1, 3 and 4

    C)  1 and 4           

    D)  All of these

    Correct Answer: C

    Solution :

    [c] P-stands for Primary waves while S stands for Secondary waves. P-waves are like sound waves and longitudinal in while S-waves are like light waves and transverse in P-waves reach the Earth prior to S-waves i.e. P-waves have more speed than S-waves. P-waves can travel through all matters i.e. gaseous, liquid and solid while S-waves can only through solid materials.

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