Multiple choice

Assertion (A): The structure of the interior of the earth is deduced with the help of seismic waves. Reason (R): The 'S' wave travel in solid, liquid and gas while the 'P' waves travel only in solid.

  1. Both A and R are true and R is the correct explanation of A.

  2. Both A and R are correct but R is not the correct explanation of A.

  3. A is true but R is false.

  4. A is false but R is true.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The structure of Earth's interior is indeed deduced using seismic waves (Assertion A is true). However, Reason R is false because it reverses the facts: P-waves (Primary) can travel through solids, liquids, AND gases, while S-waves (Shear) can ONLY travel through solids. This difference in behavior is actually what helps scientists understand Earth's internal structure.

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