Mechanical Properties of Solids Test

Result

Mechanical Properties of Solids Test - 32

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Weekly Quiz Competition

Question 1
4 / -1

The stress versus strain graphs for wires of two materials A and B are as shown in the figure. If YA and YB are the Young\'s modulii of the materials, then

A
Y_B = 2 Y_A

B
Y_A — Y_B

C
Y_B = 3Y_A

D
Y_A = 3 Y_B

Solution
Question 2
4 / -1

The load versus elongation graph for four wires of the same material is shown in the figure. The thickest wire is represented by the line

A
OD

B
OC

C
OB

D
OA

Solution
Question 3
4 / -1

The graph is drawn between the applied force F and the strain (x) for a thin uniform wire. The wire behaves as a liquid in the part

A
ab

B
be

C
cd

D
oa
Question 4
4 / -1

The graph shows the behaviour of a length of wire in the region for which the substance obeys Hooke\'s law. P and Q represent

A
P = Applied force, Q = Extension

B
P = Extension, Q = Applied force

C
P = Extension, Q = Stored elastic energy

D
P = Stored elastic energy, Q = Extension

Solution
Question 5
4 / -1

The potential energy U between two molecules as a function of the distance X between them has been shown in the figure. The two molecules are

A
Attracted when x lies between A and B and are repelled when X lies between B and C

B
Attracted when x lies between B and C and are repelled when X lies between A and B

C
Attracted when they reach B

D
Repelled when they reach B

Solution
Question 6
4 / -1

The value of force constant between the applied elastic force F and displacement will be Y

A

B

C

D

Solution
Question 7
4 / -1

Which one of the following is the Young\'s modulus (in N/m²) for the wire having the stress-strain curve shown in the figure?

A
24 × 10¹¹

B
8 × 10¹¹

C
10 × 10¹¹

D
2 × 10¹¹

Solution
Question 8
4 / -1

The diagram shows the change x in the length of a thin uniform wire caused by the application of stress F at two different temperatures T₁ and T₂. The variations shown suggest

A
T₁ > T₂

B
T₁ < T₂

C
T₁ = T₂

D
None of these
Question 9
4 / -1

A student plots a graph from his reading on the determination of Young\'s modulus of a metal wire but forgets to label. The quantities on X and Y axes may be respectively.

A
Weight hung and length increased

B
Stress applied and length increased

C
Stress applied and strain developed

D
Length increased and weight hung
Question 10
4 / -1

The points of maximum and minimum attraction in the curve between potential u energy (U) and distance diatomic are

A
S and R

B
T and S

C
R and S

D
S and T

Solution