1.

Figure shows an irregular wedge of mass `m` placed on a smooth horizontal surface. Part `BC` is rough. The magnitude of velocity of wedge when the block comes to rest `(w.r.t.` wedge `)` on part `BC` is `:`A. `sqrt(gH)`B. `sqrt(g(H-h))`C. `2sqrt(gH)`D. none of these

Answer» Correct Answer - A
When the block comes to rest, the wedge continues to move at `V=(u)/(2)=sqrt(gH)` on the smooth surface. (since, momentum of wedge`-` block system remains conserved) .


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