|Consider the following statements regarding seismic waves.|
|1. There are two types of body waves. They are called P and S waves.|
|2. The P-waves are similar to light waves and S-waves are similar to sound waves.|
|3. The P-waves are slower than S-waves.|
|4. P-waves can travel through gaseous, liquid and solid materials while S-waves can travel only through solid materials.|
|Which of the statements given above are correct?|
A) 1, 2 and 3
B) 1, 3 and 4
C) 1 and 4
D) All of these
Correct Answer: C
Solution :[c] P-stands for Primary waves while S stands for Secondary waves. P-waves are like sound waves and longitudinal in while S-waves are like light waves and transverse in P-waves reach the Earth prior to S-waves i.e. P-waves have more speed than S-waves. P-waves can travel through all matters i.e. gaseous, liquid and solid while S-waves can only through solid materials.
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