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 state of earth pressure at rest is the state of equilibrium with zero strain condition.
Reason (R): In rest condition neither the wall nor the soil moves.
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

(a)
$K_0=\frac{\mu }{1-\mu }$
Where,
$\mu isthePoisso{n}^{\prime }sratio\simeq 1-\sin {\varphi }^{\prime }$
${\varphi }^{\prime }istheangleofshearingresistance$