Mechanical Properties of Solids Test

Result

Mechanical Properties of Solids Test - 1

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Question 1
4 / -1

The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied ?

A
length = 50 cm , diameter = 0.5 mm

B
length = 100 cm, diameter = 1 mm

C
length = 200 cm, diameter = 2 mm

D
length = 300 cm, diameter = 3 mm.
Question 2
4 / -1

If Young's modulus of elasticity Y for a material is 1.5 times its rigidity coefficient η , the Poisson's ratio σ will be

A

B

C

D
Question 3
4 / -1

For a given material, the Young's modulus is 2.4 times that of rigidity modulus. Its Poisson's ratio is

A
2.4

B
1.2

C
0.4

D
0.2
Question 4
4 / -1

The Poisson's ratio cannot have the value

A
0.7

B
0.2

C
0.1

D
0.3
Question 5
4 / -1

A wire is stretched under a force. If the wire suddenly snaps, the temperature of the wire

A
remains the same

B
decreases

C
increases

D
first decreases then increases
Question 6
4 / -1

A large open tank has two holes in the wall. One is a square hole of side L at a depth y from the top and the other is a circular hole of radius R at a depth 4 y from the top. When the tank is completely filled with water, the quantities of water flowing out per second from both holes are the same. Then, R is equal to

A

B

C

D
Question 7
4 / -1

The hollow shaft is ... than a solid shaft of same mass, material and length.

A
less stiff

B
more stiff

C
equally stiff

D
None of these
Question 8
4 / -1

Which of the following relation is true?

A
Y = 2η ( 1 – 2σ )

B
Y = 2η ( 1 + 2σ )

C
Y = 2η ( 1 – σ )

D
( 1 + σ ) 2η = Y
Question 9
4 / -1

Which of the following substances has the highest elasticity?

A
Sponge

B
Steel

C
Rubber

D
Copper
Question 10
4 / -1

A
2 × 10¹¹ N/m

B
2 × 10^–11 N/m

C
3 × 10^–12 N/m

D
2 × 10^–13 N/m