If we stretch a pipe to double of its length then flow rate
Correct answer: B. Half
- A. Double
- B. Half
- C. Remain same
- D. Quadrupled
Explanation
According to Poiseuille's Law, the flow rate through a pipe is inversely proportional to the length of the pipe. Doubling the length of the pipe increases the resistance to flow, which decreases the flow rate. Therefore, the correct answer is that the flow rate is halved if all other factors remain unchanged. The other options are incorrect because they either misunderstand the relationship between pipe length and flow rate or ignore the increase in resistance.
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