MCQ
A vertical stick 20m long casts a shadow 10m long on the ground. At the same time, a tower casts a shadow 50m long on the ground. The height of the tower is:
- ✓100m.
- B120m.
- C25m.
- D200m.
✓
Answer
Correct option: A.
100m.
Height of a stick = 20m
and length of its shadow = 10m
At the same time
Let height of tower = x m
and its shadow = 50m
20 : x = 10 : 50
x × 10 = 20 × 50
$\Rightarrow\text{x}=\frac{20\times50}{10}=100$
Height of tower = 100m.
and length of its shadow = 10m
At the same time
Let height of tower = x m
and its shadow = 50m
20 : x = 10 : 50
x × 10 = 20 × 50
$\Rightarrow\text{x}=\frac{20\times50}{10}=100$
Height of tower = 100m.
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