UPSC 2023: 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?

The correct answer is option (c): Both 1 and 2. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.

This question was asked in UPSC CSE Prelims 2023, GS Paper 1, as Question 65. It falls under Geography > Physical Geography & Geomorphology.

This question is rated "moderate". It requires sound conceptual understanding of the topic.

UPSC has asked 23 questions from Physical Geography & Geomorphology (under Geography) across multiple years. Visit the topic page to see the full list and year-wise trends.