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The respective lengths of shadows generated for a free standing wall of given height L by sunlight incident at angles of 30°, 45°, 60°, 90° to the horizontal are
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- L L 3, L, ,0 3
- L L, L 3, ,0 3
- L, L, L 3,0 3
- L 0,, L, L 3 3
Correct Option: A
The respective lengths of shadows generated for a free standing wall of given height L by sunlight incident at angles of 30, 45, 60 and 90 degrees to the horizontal are:
Length of shadow, l = height /tan α, where α = angle with horizontal.
| For 30°, l = L | = L √3 . Similarly | |
| (1/√3) |
for 45°, l = L
for 60°, l = L/√3
for 90°, l = 0
