Consider the following statements:
(i) young’s modulus is numerically equal to the stress which will double the length of wire.
(ii) Viscosity of gases is greater than that of liquids.
(iii) The surface tension of a liquid decreases due to the presence of insoluble contamination. The number of above statements that are true is

One

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Two

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Three

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Zero

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Solution

The correct option is B Two
(i), (iii) are true but (ii) is false as we know that viscosity is gases is about 100 times less than viscosity in liquids.

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Similar questions

Q. Consider the following two statements A and B and identify the correct choice in the following.
A : Viscosity of liquids decrease with decrease of temperature
B: Surface tension of liquids decreases with increase of temperature

Q. Consider the following statements.
1. The viscosity of a gas increases with rise in temperature.
2. The viscosity of the liquid falls very rapidly with rise in temperature.
Which of the statements(s) given above is/are correct?

Q. Fill in the blanks using the word(s) from the list appended with each statement.
(a) Surface tension of liquids generally ....... with temperatures. (increases / decreases)
(b) Viscosity of gases ........ with temperature, whereas viscosity of liquids ....... with temperature (increases / decreases)
(c) For solids with elastic modulus of rigidity, the shearing force is proportional to ....... , while for fluids it is proportional to ....... (shear strain / rate of shear strain)
(d) For a fluid in a steady flow, the increase in flow speed at a constriction follows (conservation of mass / Bernoullis principle)
(e) For the model of a plane in a wind tunnel, turbulence occurs at a ....... speed for turbulence for an actual plane (greater / smaller)

Q. Fill in the blanks using the word(s) from the list appended with each statement: (a) Surface tension of liquids generally . . . with temperatures (increases / decreases) (b) Viscosity of gases . . . with temperature, whereas viscosity of liquids . . . with temperature (increases / decreases) (c) For solids with elastic modulus of rigidity, the shearing force is proportional to . . . , while for fluids it is proportional to . .. (shear strain / rate of shear strain) (d) For a fluid in a steady flow, the increase in flow speed at a constriction follows (conservation of mass / Bernoulli’s principle) (e) For the model of a plane in a wind tunnel, turbulence occurs at a ... speed for turbulence for an actual plane (greater / smaller)

Fill in the blanks using the word(s) from the list appended with each statement:

(a) Surface tension of liquids generally . . . with temperatures (increases / decreases)

(b) Viscosity of gases. .. with temperature, whereas viscosity of liquids . . . with temperature (increases / decreases)

(c) For solids with elastic modulus of rigidity, the shearing force is proportional to . . . , while for fluids it is proportional to . .. (shear strain / rate of shear strain)

(d) For a fluid in a steady flow, the increase in flow speed at a constriction follows (conservation of mass / Bernoulli’s principle)

(e) For the model of a plane in a wind tunnel, turbulence occurs at a ... speed for turbulence for an actual plane (greater / smaller)

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The correct option is B Two(i), (iii) are true but (ii) is false as we know that viscosity is gases is about 100 times less than viscosity in liquids.

The correct option is B Two
(i), (iii) are true but (ii) is false as we know that viscosity is gases is about 100 times less than viscosity in liquids.