Mechanical Properties of Solids Test

Result

Mechanical Properties of Solids Test - 8

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Weekly Quiz Competition

Question 1
4 / -1

Calculate the work done, if a wire is loaded by Mg weight and the increases in length is l

A
Mgl

B
Zero

C
Mgl/2

D
2 Mgl

Solution
Question 2
4 / -1

Two wires of same diameter of the same material having the length l and 2l. If the force F is applied on each, the ratio of the work done in the two wires will be

A
1 : 2

B
1 : 4

C
2 : 1

D
1 : 1

Solution
Question 3
4 / -1

A 5 metre long wire is fixed to the ceiling. A weight of 10 kg is hung at the lower end and is 1 metre above the floor. The wire was elongated by 1 mm. The energy stored in the wire due to stretching is

A
Zero

B
0.05 Joule

C
100 Joule

D
500 Joule

Solution
Question 4
4 / -1

If the forces constant of a wire is K, the work done in increasing the length of the wire by l is

A
Kl/2

B
Kl

C
Kl²/2

D
Kl²

Solution
Question 5
4 / -1

A stretched rubber has

A
Increased kinetic energy

B
Increased potential energy

C
Decreased kinetic energy

D
Decreased potential energy
Question 6
4 / -1

On stretching a wire, the elastic energy stored per unit volume is

A
Fl/2AL

B
FA/2L

C
FL/2A

D
Fl/2

Solution
Question 7
4 / -1

The isothermal elasticity of a gas a equal to

A
Density

B
Volume

C
Pressure

D
Specific heat
Question 8
4 / -1

The ratio of the adiabatic to isothermal elasticities of a triatomic gas is

A
3/4

B
4/3

C
1

D
5/3

Solution
Question 9
4 / -1

Bulk modulus was first defined by

A
Young

B
Bulk

C
Maxwell

D
None of these
Question 10
4 / -1

A uniform cube is subjected to volume compression. If each side is decreased by 1%, then bulk strain is

A
0.01

B
0.06

C
0.02

D
0.03

Solution