Question
While making this paper, I stayed up till late at night working with candle light. I had two
candles of equal length L lit and placed at the same time, as shown in the figure. Immediately
thereafter I noticed that the shadow of the first candle on the left wall is not changing in
length, and the shadow of the second candle on the right wall is being shortened at a speed v.
(Take d1
= 10 cm, d2
= 20 cm, d3
= 30 cm, v = 1 mm/s, L = 20 cm.)
Joshi sir comment
Problem is interesting yet not complete. Complete it to get answer
thanks