Question

Assertion (A): The effective rainfall erosion index of a given area is linearly proportional to the percentage of ground that is not covered by vegetation.
Reason (R): The rain erosion index includes both the kinetic energy of rain and the maximum 30-minute rain intensity.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A).
• B. Both (A) and (R) are correct but (R) is NOT the correct explanation of (A).
• C. (A) is correct but (R) is not correct.
• D. (A) is not correct but (R) is correct.

Hint:

Always evaluate logical connections in assertion-reason type questions independently of correctness.

Answer 1

The Correct Option is B

Both statements are individually true. However, the rain erosion index is a measure of erosivity and is not directly proportional to vegetation cover. Vegetation affects erosion but not through the definition of the index.