Q. Consider the following statements regarding seismic waves:

1. The speed of the P waves slows down in liquid phase
2. The speed of S waves increases in liquid phase
3. Love waves are most destructive and devastating

Which of the above statements is / are correct?
Answer: 1 and 3 are correct
Notes: P waves slow down in liquid phase, but S waves cannot travel through liquids and thus do not increase in speed. Love (L) waves, a type of surface wave, are the most destructive and devastating. Therefore, statements 1 and 3 are correct, while statement 2 is incorrect.