Mechanical Properties of Fluids Test

Result

Mechanical Properties of Fluids Test - 83

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Weekly Quiz Competition

Question 1
4 / -1

The correct relation is

A

B

C

D
Question 2
4 / -1

The lower end of a glass capillary tube is dipped in water rises to a height of 8 cm the tube is then broken at a height of 6 cm. The height of water column and engled as contact will be

A

B

C

D

Solution
Question 3
4 / -1

The correct curve between the height or depression h of liquid in a capillary tube and its radius is

A

B

C

D

Solution
Question 4
4 / -1

When liquid medicine of testing S is to be put in the eye. It is done with the help of a dropper as the bulb on the top of the dropper is pressed a drop forms at the opening of the dropper we wish to estimate the size of the drop. We first assume that the drop formed at the opening is spherical because the requires a minimum increase in its surface energy. To determine the size w calculate the net vertical force due to surface tension T when the radius of the drop is R. When this force becomes smaller than the weight of the drop the drop gets detached from the dropper.
If the radius od the opening od the dropper is r ; the vertical force due to the surface tension on the drop of radius R. (cassuming r << R) is

A
2πrT

B
2πRT

C

D

Solution
Question 5
4 / -1

Assertion : When height of a tube is less then liquid rise in the capillary tube the liquid does not overflow.
Reason : Product of radius of meniscus and height of liquid in capilling tube always remains constant.

A
If both assertion and reason are true and the reason is the correct explanation of the assertion

B
If both assertion and reason are true but reason is not the correct explanation of the assertion

C
If assertion is true but reason is false

D
If the assertion and reason both are false

Solution
Question 6
4 / -1

Assertion : The impurities always decrease the surface tension of a liquid.
Reason : The change in surface tension of the liquid depends upon the degree of cont animation of the impurity.

A
If both assertion and reason are true and the reason is the correct explanation of the assertion

B
If both assertion and reason are true but reason is not the correct explanation of the assertion

C
If assertion is true but reason is false

D
If the assertion and reason both are false
Question 7
4 / -1

Assertion : Tiny drops of liquid resist deforming forces better than bigger drops.
Reason : Excess pressure inside a drop is directly proportional to surface tension.

A
If both assertion and reason are true and the reason is the correct explanation of the assertion

B
If both assertion and reason are true but reason is not the correct explanation of the assertion

C
If assertion is true but reason is false

D
If the assertion and reason both are false
Question 8
4 / -1

A trangular lamind of area A and, height h is immersed in a liquid of density S in a vertical plane with its base on the surface of the liquid. The thrust on lamina is

A

B

C

D

Solution
Question 9
4 / -1

The density S of coater of bulk modulus B at a depth y in the ocean is related to the density at surface so by the relation.

A

B

C

D

Solution
Question 10
4 / -1

The pressure on a swimmer 20 m below the surface of coater at sea level is

A
1.0 atm

B
2.0 atm

C
2.5 atm

D
3.0 atm

Solution