3no , the answer is C=(2,4) and D=(6,8).
The coordinates of the extremities of a rod are A(1,2) and B(3,4). S(0,0) is the source of light. The rod AB is parallel to the wall and is midway betwen the point source of light and the wall. CD is the shadow of AB on the wall. S, AB and CD are in same horizontal plane. Find the ends C,D of the shadow.
From ADG.Pg C-18. Q.no-8.
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3 Answers
24Apply simple geometry...
draw the figure...and take reflections from the extreme ends of rod [1]