Two candles of equal height h are placed in between vertical walls on a line perpendicular to the walls at a distance a from each other and also from the nearer wall. With what speed will the shadows of the candles move along the walls if one burns out completely in time t_(1) and the other in time t_(2).

Two candles of equal height h are placed in between vertical walls on

1.	Two candles of equal height h are placed in between vertical walls on a line perpendicular to the walls at a distance a from each other and also from the nearer wall. With what speed will the shadows of the candles move along the walls if one burns out completely in time t_(1) and the other in time t_(2).
Answer» ANSWER :`(H)/(t_(1)t_(2))(2t_(1)-t_(2))`,(h)/(t_(1)t_(2))(2t_(2)-t_(1))`

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