Question

Directions: The following items consists of two statements; one labelled as 'Assertion (A)' and the other as 'Reason (R)'. You are to examine these two statements carefully and select the answers to these items using the codes given below:

Assertion (A): The earth pressure at rest is greater than active pressure but less than passive earth pressure.
Reason (R): When the wall moves away from backfill from the rest condition, the mobilization of the internal resistance of soil occurs; on the other hand, if the wall moves towards the fill, the shearing resistance build up.
Codes:

• A. both A and R are true and R is the correct explanation of A
• B. both A and R are true but R is not a correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is A both A and R are true and R is the correct explanation of A

$K_a<K_0<K_p$