10th Class
Mathematics
Triangles
Question Bank
Triangles
question_answer
A student of height 1m is walking away from the base of a street light at a speed of 0.5 m/sec. If the street light is 5m above the ground, find the length of the student's shadow after 8 seconds.
A) \[2\text{ }m\]
B) \[1\text{ }m\]
C) \[\sqrt{3}\text{ }m\]
D) \[\sqrt{2}\text{ }m\]
Correct Answer:
B
Solution :
(b): \[\frac{x}{4+x}=\frac{1}{5}\] \[\Rightarrow \]\[x=1\] metre