Work Energy And Power Question 258
Question: How much water, a pump of 2 kW can raise in one minute to a height of 10 m, take $ g = 10 m/s^{2} $ ?
Options:
A) 1000
B) 1200
C) 100
D) 2000
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ P=\frac{W}{t}.Here,P=2kW=2000W. $
$ W=Mgh=M\times 10\times 10=100M $
And $ at=60s. $
This gives, $ M=1200kg $
Its volume $ =1200 $ litre as 1 litre of water contains 1 kg of its mass.
