A) 2.50 m
B) 3.75 m
C) 4.00 m
D) 1.25 m
Correct Answer: B
Solution :
Time taken by first drop to reach the ground \[t=\sqrt{\frac{2h}{g}}\Rightarrow t=\sqrt{\frac{2\times 5}{10}}=1s\] \[t=1s\] As the water drops fall at regular intervals from a tap therefore time difference between any two drops\[=\frac{1}{2}s.\]. In this given time, distance of second drop from the tap\[=\frac{1}{2}g{{\left( \frac{1}{2} \right)}^{2}}=\frac{5}{4}=1.25m\] Its distance from ground\[=5-12,5=3.75\text{ }m.\]You need to login to perform this action.
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