(a) ASSERTION (A) : Dams are built broader at the base than at the top. REASON(R) : As the depth increases pressure increases. Both A and R are true and the R is the correct explanation of the A. Both A and R are true but R is not a correct explanation of the A. A is true but R is false. A is false but R is true. 3. (b) ASSERTION (A): Frictional force arises due to the interlocking of irregularities. REASON (R): Frictional force is a non-contact force. Both A and R are true and R is the correct explanation of the A. Both A and R are true but R is not a correct explanation of the A. A is true but R is false. A is false but R is true.
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The pressure is a static fluid at a depth h below the surface is given by the ... top of the area is smaller than the force acting on a small area near the bottom. ... The force on each 2 m section of wall increases linearly with depth.
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