NDA 2026 Physics question
Consider the following statements : I. In a seismograph, P waves are recorded earlier than S waves. II. 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?
Answer: (C)
Solution
P waves travel fastest and are the first to be recorded on a seismograph. They are longitudinal waves, in which the particles vibrate
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