Question: Two inclined planes OA and OB intersect in a horizontal plane having their inclinations α and β with the horizontal .A particle is projected from point P with velocity u along a direction perpendicular to plane OA.
1. The particle strikes plane OB perpendicularly at Q. The path of the particle from P to Q is
a) Rectilinear
b) Circular
c) Parabolic
d) elliptical
2. If α = 30° ,β = 30° , the time of flight from P to Q is
3. If α = 30° ,β = 30° and OP = 4.9m, the velocity of projection is
