[" 10.A particle of mass "m" moves in the "XY" plane "],[" with a velocity "v" along the straight line "AB" .If "],[" the angular momentum of the particle with "],[" respect to origin "O" is "L_(A)" when it is at "A" and "L_(B)],[" when it is at "B" ,then "],[" (a) "L_(A)=L_(B)],[" (b) the relationship between "L_(A)" and "L_(B)],[" depends upon the slope of the line "AB],[" (d) "L_(A)L_(B)" ."]