Physics 9 Chapter 7 - Properties of Matter - 24

Physics 9 Chapter 7 - Properties of Matter - 24

1. What is the formula of Young’s modulus?

a) Y = (F Lo) x (A ∆L)
b) Y = (F Lo) + (A ∆L)
c) Y = (F Lo) - (A ∆L)
d) Y = (F Lo) / (A ∆L)

2. What is the young’s modulus of steel?

a) 200 x 10⁹ Nm^-2
b) 11.0 x 10⁹ Nm^-2
c) 0.07 x 10⁹ Nm^-2
d) 7000 x 10⁹ Nm^-2

3. What is the SI unit of Young’s modulus?

a) Newton per cubic metre
b) Newton per decimetre
c) Newton per centimetre
d) Newton per square metre

4. What is the young’s modulus of diamond?

a) 0.07 x 10⁹ Nm^-2
b) 7000 x 10⁹ Nm^-2
c) 11.0 x 10⁹ Nm^-2
d) 1120 x 10⁹ Nm^-2

5. What is the young’s modulus of parallel grain wood?

a) 0.07 x 10⁹ Nm^-2
b) 10 x 10⁹ Nm^-2
c) 11.0 x 10⁹ Nm^-2
d) 7000 x 10⁹ Nm^-2

6. What is the young’s modulus of copper?

a) 7000 x 10⁹ Nm^-2
b) 11.0 x 10⁹ Nm^-2
c) 110 x 10⁹ Nm^-2
d) 0.07 x 10⁹ Nm^-2

7. What is the young’s modulus of tungsten?

a) 400 x 10⁹ Nm^-2
b) 11.0 x 10⁹ Nm^-2
c) 0.07 x 10⁹ Nm^-2
d) 7000 x 10⁹ Nm^-2

8. A steel wire 1 m long and cross-sectional area 5x10^-5 m² is stretched through 1 mm by a force of 10,000 N. Find the Young’s modulus of the wire?

a) 2 x 10^{11 Nm^-2}
b) 1000 Nm^-2
c) 10000 Nm^-2
d) 2 x 10^{9 Nm^-2}

9. What is the young’s modulus of perpendicular grain wood?

a) 0.07 x 10⁹ Nm^-2
b) 11.0 x 10⁹ Nm^-2
c) 1 x 10⁹ Nm^-2
d) 7000 x 10⁹ Nm^-2

10. What is the SI unit of Young’s modulus?

a) Nm²
b) Nm^-3
c) Nm³
d) Nm^-2

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