Question

Choose the CORRECT statement(s) on seismic wave propagation in an elastic isotropic medium.

• A. P-waves are polarized in the direction of propagation.
• B. S-waves are polarized in the direction of propagation.
• C. Rayleigh waves are elliptically polarized.
• D. Love waves are elliptically polarized.

Hint:

In seismic waves, P-waves are longitudinal, S-waves are transverse, Rayleigh waves are elliptically polarized, and Love waves are horizontally polarized.

Answer 1

The Correct Option is A, C

- (A) P-waves (Primary waves) are longitudinal waves and are polarized in the direction of propagation. This statement is true.
- (B) S-waves (Secondary waves) are shear waves, and they are polarized perpendicular to the direction of propagation, so this statement is false.
- (C) Rayleigh waves are surface waves that involve elliptical polarization of the particle motion, and this statement is true.
- (D) Love waves are also surface waves but are polarized horizontally and involve transverse motion, not elliptical polarization. Therefore, this statement is false. Thus, the correct answers are (A) and (C). Final Answer:
\[ \boxed{(A), (C)} \]