COMEDK 2020 | Fluid Mechanics Question 13 | Physics

A ball floats on the surface of water in a container exposed to the atmosphere. When the container is covered and the air is partially removed, then the ball

rises

gets immersed more in water

remains immersed at its former depth

may rise or sink

COMEDK 2020

MCQ (Single Correct Answer)

-0

A frame made of metallic wire enclosing a surface area A is covered with a soap film. If the area of the frame of metallic wire is reduced by 50%, then the energy of the soap film will be changed by

100%

75%

50%

25%

COMEDK 2020

MCQ (Single Correct Answer)

-0

A fluid is in streamline flow across a horizontal pipe of variable area of cross-section. For this which of the following statements is correct?

Velocity of fluid is maximum at narrowest part.

Pressure of the fluid is maximum at widest part.

Both (a) and (b)

Neither (a) nor (b)

Questions Asked from MCQ (Single Correct Answer)

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