vertical if the soil is in an active state of plastic equilibrium

vertical if the soil is in a passive state of plastic equilibrium

inclined at 45° to the vertical plane

none of the above

reduce both the active earth pressure intensity and passive earth pressure intensity

increase both the active earth pressure intensity and passive earth pressure intensity

reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity

increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity[GATE 99]

7°

10°

12°

17°

less than active earth pressure but greater than passive earth pressure

greater than active earth pressure but less than passive earth pressure

greater than both the active earth pressure and passive earth pressure

less than both the active and passive earth pressures

is more conservative

neglects the effect of forces acting on the sides of the slices

assumes the slip surface as an arc of a circle

all of the above