Question: 50 men took a dip in a water tank, 40 m long and 20 m broad on Amavasya. If the average displacement of water by a man is $ 4m^{3}, $ then the rise in the water level in the tank will be
Options:
A) 35 cm
B) 50 cm
C) 20 cm
D) 25 cm
Show Answer
Answer:
Correct Answer: D
Solution:
- Average displacement of water by 50 men $ =200m^{3} $
Let rise in the water level be h.
$ \therefore $ $ 40\times 20\times h=200 $
$ \Rightarrow $ $ h=\frac{200}{40\times 20}=0.25m $
$ \Rightarrow $ $ h=25cm $