A load of 2 kg produces an extension of 1 mm in a wire of 3 m in length and 1 mm in diameter. The Young's Modulus of wire will be

1. 3.25×1010 Nm-2

2. 7.48×1012 Nm2

3. 7.48×1010 Nm-2

4. 7.48×10-10 Nm-2

Subtopic:  Elasticity |
 63%
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The value of Young's Modulus for a perfectly rigid body is

1. 1 

2. Less than 1

3. Zero

4. Infinite

Subtopic:  Elasticity |
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A spherical ball contracts in a volume by 0.01% when subjected to a normal uniform pressure of 100 atm. The Bulk modulus of its material is

1. 1.01×1011 Nm2

2. 1.01×1012 Nm-2

3. 1.01×1010 Nm-2

4. 1.01×1013 Nm-2

Subtopic:  Elasticity |
 65%
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A metallic rod of length l and cross-sectional area A is made of a material of Young's Modulus Y. If the rod is elongated by an amount y, then the work done is proportional to

1. y

2. 1y

3. y2

4. 1y2

Subtopic:  Elasticity |
 61%
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If the Bulk Modulus of lead is 8.0×109 N/m2 and the initial density of the lead is 11.4 g/cc, then under the pressure of 2.0×108 N/m2, the density of the lead is

1. 11.3 g/cc

2. 11.5 g/cc

3. 11.6 g/cc

4. 11.7 g/cc

Subtopic:  Elasticity |
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For a given material, the Young's Modulus is 2.4 times its modulus of rigidity. Its Poisson's ratio is

1. 0.2

2. 0.4

3. 1.2

4. 2.4

Subtopic:  Poisson's Ratio |
 69%
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When the temperature of a gas is constant at 20°C and pressure is changed from P1=1.01×105 Pa to P2=1.165×105 Pa, then the volume changes by 10%. The Bulk modulus of the gas is

1. 1.55×105 Pa

2. 1.01×105 Pa

3. 1.4×105 Pa

4. 0.115×105 Pa

Subtopic:  Elasticity |
 67%
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The stress versus strain growth for wires of two materials A and B are as shown in the figure. If YA and YB are the Young's Moduli of the materials, then

1. YB=2YA

2. YA=3YB

3. YB=3YA

4. YA=YB

Subtopic:  Stress - Strain Curve |
 82%
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When a rubber ball is taken to the bottom of a sea of depth 1400 m, its volume decreases by 2%. The Bulk Modulus of rubber ball is [density of water is 1 g cc and g=10 m/s2]

1. 7×108 N/m2

2. 2×108 N/m2

3. 2.5×108 N/m2

4. 9×108 N/m2

Subtopic:  Elasticity |
 71%
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A spherical ball contracts in volume by 0.02%, when subjected to a normal uniform pressure of 50 atmosphere. The Bulk Modulus of its material is

1. 1×1011 N/m2

2. 2×1010 N/m2

3. 2.5×1010 N/m2

4. 1×1013 N/m2

Subtopic:  Elasticity |
 77%
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