Q89 / 90 · JEE Main 2023 (10 Apr Shift 2) · Physics
Figure below shows a liquid being pushed out of the tube by a piston having area of cross section . The area of cross section at the outlet is . If the piston is pushed at a speed of , the speed of outgoing fluid is _____

Figure below shows a liquid being pushed out of the tube by a piston having area of cross section . The area of cross section at the outlet is . If the piston is pushed at a speed of , the speed of outgoing fluid is _____

Correct answer: 80
Solution
The given data is
Using equation of continuity which is a conservation of mass principle,
Hence, the correct answer is 80.