SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-7

  • question_answer
    Which one of the following are recorded first by the Seismograph?

    A)  R-waves                       

    B)  P-waves

    C)  S-waves                       

    D)  L-waves

    Correct Answer: B

    Solution :

     The first kind of body wave (waves traveling through the interior of the earth which arrive before the surface waves are emitted by an earthquake) is the P wave or primary wave. This is the fastest kind of seismic wave, and, consequently, the first to ?arrive? at a seismic station. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth.


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