A block of mass 
is lying on a rough inclined plane having an inclination 
. The inclined plane is moving horizontally with a constant acceleration of 
as shown in the figure. The minimum value of coefficient of friction, so that the block remains stationary with respect to the inclined plane is (Take, 
)
Text Solution
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The block-plane system is shown in the figure,
So, from the above free body diagram (FBD), Acceleration of body sliding up over inclined plane.
Acceleration of body sliding down over a rough inclined plane
From block to be stationary,
………(iii)
Dividing above equation by 
and putting the values,
Hence, the correct option is
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