How to solve the following, please help
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How to solve the following, please help
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Answer:
160m............... ........
Explanation:
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Draw perpendicular from the reflecting point to the line joining PQ.
Draw perpendicular from the reflecting point to the line joining PQ.So, time taken for coming directly, t= d/340
Draw perpendicular from the reflecting point to the line joining PQ.So, time taken for coming directly, t= d/340When coming after reflection, t= 2X \sqrt{D^{2} + (d/2)^{2})} /340 where, D = Perpendicular distance from line PQ to the wall = 100
Draw perpendicular from the reflecting point to the line joining PQ.So, time taken for coming directly, t= d/340When coming after reflection, t= 2X \sqrt{D^{2} + (d/2)^{2})} /340 where, D = Perpendicular distance from line PQ to the wall = 100Difference between the two = 0.2 S
Draw perpendicular from the reflecting point to the line joining PQ.So, time taken for coming directly, t= d/340When coming after reflection, t= 2X \sqrt{D^{2} + (d/2)^{2})} /340 where, D = Perpendicular distance from line PQ to the wall = 100Difference between the two = 0.2 SSolve for d.