# IIT JEE/IIT JEE Fluids At Rest Sample Test,Sample questions

1.5

2.6

3.10

4.2

## Question: ```A boat is floating on the surface of water in a tank carrying steel balls. If the balls are thrown into the tank one by one how will it affect the level of water? ```

1.It will rise

2.It will fall

3.It will remain unchanged

4.First it will rise and then fall

1.2 N

2.3 N

3.5 N

4.7 N

1.27.6 kPa

2.50 kPa

3.60 kPa

4.70kPa

## Question: ```A dam for water reservoir is built thicker at the bottom than at the top because: ```

1.pressure of water is very large at the bottom due to its large depth

2.water is likely to have more density at the bottom due to its large depth

3.quantity of water at the bottom is large

4.none of the above

## Question: ```A dog is sitting in a boat which is floating in a pond. If the dog drinks some water from the pond then: ```

1.the level of water in the pond decreases

2.the level of water in the pond increases

3.the level of water in the pond first increases, then decreases

4.the level of water in the pond remains unchanged

## Question: ```A glass bulb is balanced by a brass weight in a sensitive beam balance Now the balance is covered by a bell-jar which is then evacuated; then: ```

1.the beam will remain horizontal

2.the pan containing the bulb will go down

3.the pan containing the bulb will go up

4.the pan will rotate about its axis

## Question: ```A glass bulb is balanced by a brass weight in a sensitive beam balance. Now the balance is covered by a glass-jar which is then evacuated. Then: ```

1.the beam will remain horizontal

2.the pan containing the bulb will go down

3.the pan containing the bulb will go up

4.none of the above

1.m = 30 g

2.m = 35 g

3.m = 20 g

4.None

## Question: ```A solid floats in a liquid in the partially submerged position: ```

1.the solid exerts a force equal to its weight on the liquid

2.the liquid exerts a force of buoyancy on the solid which is equal to the weight of the solid

3.the weight of the displaced liquid equals the weight of the solid

4.all of the above

## Question: ```A solid is completely immersed in a liquid The force exerted by the liquid on the solid will: none of the above```

1.increase if it is pushed deeper inside the liquid

2.change if its orientation is changed

3.decrease if it is taken partially out of the liquid

4.none of the above

1.3.3

2.6.4

3.7.2

4.12.8

1.2 4

2.6 4

3.6 2

4.4 8

## Question: ```An iron ball is weighed in air and then in water by a spring balance: ```

1.its weight in air is more than in water

2.its weight in water is more than in air

3.its weight is same both in air and water

4.its weight is zero in water

## Question: ```Bernoullis equation is applicable to points: ```

2.in a stream line

3.in a straight line perpendicular to a stream line

4.in any non-viscous liquid

## Question: ```Bernoullis equation is based upon: ```

1.isochoric process

2.isobaric process

3.isothermal process

## Question: ```if a liquid is subjected to a horizontal acceleration then: ```

1.slope of the liquid is inversely proportional to the horizontal acceleration

2.slope of the liquid is directly proportional to the horizontal acceleration

3.there is no direct relation between acceleration and inclination

4.none of the above

## Question: ```If there were a smaller gravitational effect, which of the following forces do you think would alter in some respect? ```

1.Viscous force

2.Archimedes uplift

3.Electrostatic force

4.Nuclear force

## Question: ```In a beaker containing liquid, an ice cube is floating When ice melts completely, the level of liquid rises Then the density of the liquid is: ```

1.more than the density of ice

2.less than the density of ice

3.same as the density of ice

4.none of the above

## Question: ```In a steady incompressible flow of a liquid: ```

1.the speed does not change if the area of cross-section changes

2.the speed increases if the area of cross-section increases

3.the speed decreases if the area of cross-section increases

4.bubbles are produce when the area of the cross-section increases

1.1W

2.2.75W

3.1.06W

4.0.5W

1.0.106

2.10.6

3.0.901

4.0.801

## Question: ```Magnus effect is very near to the: ```

1.magnetic field

2.electric field

3.Bernoullis theorem

4.magnetic effect of current

## Question: ```The force of buoyancy on an immersed body is: ```

1.due to weight of the body

2.due to the pressure difference between upper surface and lower surface of the body

3.due to atmospheric pressure

4.both A and B are correct

## Question: ```The horizontal flow of fluid depends upon: ```

1.pressure difference

2.amount of fluid

3.density of fluid

4.all of these

## Question: ```The pressure at the bottom of a tank of liquid is not proportional to: ```

1.the density of the liquid

2.the area of the liquid surface

3.the height of the liquid

4.the acceleration

## Question: ```What is flowing through a pipe of uniform cross-section under constant pressure. At some place the pipe becomes narrow; the pressure of water at this place: ```

1.increases

2.decreases

3.remains unchanged

4. depends on several factors

## Question: ```When a slip floats on water: ```

1.its displaces no water the mass of water

2.displaced is equal to the mass of the ship

3.the mass of water displaced is lesser than the mass of the ship

4.the mass of water displaced is greater than the mass of the ship

1.6 and 2

2.3 and 4

3.2.5 and 3.5

4.4 8

## More MCQS

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