Mechanical Properties of Fluids Test

Result

Mechanical Properties of Fluids Test - 39

Score
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Weekly Quiz Competition

Question 1
4 / -1

A
4.2 N

B
4.4 N

C
2.4 N

D
8.8 N

Solution
Question 2
4 / -1

A uniform plank of young's modulus Y is moved over a smooth horizontal surface by a constant horizontal force F, The area of cross-section of the plank is A. What is the compressive strain on its plank in the direction by the force ?

A

B

C

D

Solution
Question 3
4 / -1

The length of a wire is 1.0 m and the area of cross-section is 1.0 × 10^–2 cm² If the work done for increase in length by 0.2 cm is 0.4 joule. Then what is the young's modulus ? Of material of the wire?

A

B

C

D

Solution
Question 4
4 / -1

According to Hooke's law of elasticity stress is increased the ratio of stress to strain.........

A
increases

B
Decreases

C
becomes zero

D
Remains constant

Solution
Question 5
4 / -1

A

B

C

D

Solution
Question 6
4 / -1

A wire of length 2 m is made from 10 cm³ of copper. A force F is applied so that its length increases by 2 mm. Another wire of length 8 m is made from the same volume of copper. If the force F is applied to it, its length will increase by............

A
0.8 cm

B
1.6 cm

C
2.4 cm

D
3.2 cm

Solution
Question 7
4 / -1

A wire of length L and radius r is rigidly fixed at one end on stretching the other end of the wire a force F the increase in its lengths is L. If another wire of same material but of length 2L and radius 2r is stretched with a force of 2F, the increase in its length will be ..........

A
l

B
2l

C
l/2

D
l/4

Solution
Question 8
4 / -1

Which of the following statement is correct

A
Hooke's law is applicable only within elastic limit

B
The adiabatic and isothermal elastic constants of a gas area equal

C
Young's modulus is dimensionsless

D
Stress multiplied by strain is equal to stored energy
Question 9
4 / -1

Which one of the following quantities does not have unit of force per unit area..........

A
stress

B
strain

C
Young's modulus of elasticity

D
pressure
Question 10
4 / -1

A fixed volume of iron is drawn into a wire of length L. The extension x produced in this wire be a constant force F is proportional to..........

A

B

C
L²

D
L

Solution