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A cylindrical drum, open at the top, contains 90 litres of water. It drains out through a small opening at the bottom. 30 litres of water comes out in time $t_{1}$ , the next 30 litres in further time $t_{2}$ and the last 30 litres in further time $t_{3}$ . Then :

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t1> t2>t3

t1= t2= t3

t1< t2

t1:t2:t3=(3−2):(2−1):1

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detailed solution

Correct option is b

t=A2agh1-h2 t∝h1-h2

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A cylindrical drum, open at the top, contains 90 litres of water. It drains out through a small opening at the bottom. 30 litres of water comes out in timet1 , the next 30 litres in further time t2 and the last 30 litres in further timet3 . Then :

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Ready to Test Your Skills?

free study material

A cylindrical drum, open at the top, contains 90 litres of water. It drains out through a small opening at the bottom. 30 litres of water comes out in time $t_{1}$ , the next 30 litres in further time $t_{2}$ and the last 30 litres in further time $t_{3}$ . Then :