Consider the following statements: 1. In a seismograph, P waves are recorded earlier than S waves. 2. In P waves, the individual particles vibrate to and fro in the direction of wave propagation, whereas in S waves, the particles vibrate up and down at right angles to the direction of wave…

Question

Consider the following statements: 1. In a seismograph, P waves are recorded earlier than S waves. 2. In P waves, the individual particles vibrate to and fro in the direction of wave propagation, whereas in S waves, the particles vibrate up and down at right angles to the direction of wave propagation. Which of the statements given above is/are correct?

Aicharya · Accepted Answer

Per the official UPSC key, the answer is B. Both statements are scientifically correct — most coaching keys marked C. UPSC officially marked B.

Consider the following statements: 1. In a seismograph, P waves are recorded earlier than S waves. 2. In P…

Solution