Question

Match LIST-I with LIST-II (Seismic Waves):\[\begin{array}{|c|c|} \hline \textbf{LIST-I (Type of seismic wave)} & \textbf{LIST-II (Characteristic of particle motion)} \\ \hline \text{A. Primary Wave} & \text{III. in longitudinal direction} \\ \hline \text{B. Shear Wave} & \text{IV. is perpendicular to the direction of wave propagation} \\ \hline \text{C. Love Wave} & \text{I. in horizontal plane and transverse to the direction of wave propagation} \\ \hline \text{D. Rayleigh Wave} & \text{II. in vertical plane and retrograde} \\ \hline \end{array}\]

• A. A - I, B - II, C - III, D - IV
• B. A - I, B - III, C - II, D - IV
• C. A - I, B - II, C - IV, D - III
• D. A - III, B - IV, C - I, D - II

Hint:

Remember: P → longitudinal, S → transverse, Love → horizontal transverse, Rayleigh → retrograde elliptical motion.

Answer 1

The Correct Option is D

Step 1: Recall seismic wave characteristics.
- Primary (P) waves → longitudinal waves, particle motion in direction of propagation → (III).
- Shear (S) waves → transverse to propagation → (IV).
- Love waves → transverse, horizontal motion only → (I).
- Rayleigh waves → retrograde elliptical motion in vertical plane → (II).

Step 2: Match.
- A → III
- B → IV
- C → I
- D → II

Step 3: Conclusion.
Thus, the correct matching is (D).