Correct Answer - Option 2 : A, B and C
Concept:
Shear resistance in soil occurs due to:
1. Frictional Resistance: Frictional resistance accounts for grain to grain friction and interlocking between particles (structural resistance)
2. Cohesive Resistance: Cohesive resistance is of two types:
- True cohesion
- Apparent cohesion
So, shear resistance of the soil occurs due to friction, cohesion and structural resistance.
Note:
True cohesion is on account of cementation, electrostatic/electromagnetic attraction and adhesion whereas apparent cohesion is due to capillary action.