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#### Thermal Physics Book Back Questions

10th Standard EM

Reg.No. :
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Science

Time : 00:45:00 Hrs
Total Marks : 30
2 x 1 = 2
1. The value of universal gas constant

(a)

3.81 mol–1 K–1

(b)

8.03 mol–1 K–1

(c)

1.38 mol–1 K–1

(d)

8.31 mol–1 K–1

2. In the Given diagram, the possible direction of heat energy transformation is

(a)

A$\leftarrow$B, A$\leftarrow$C, B$\leftarrow$C

(b)

A$\rightarrow$B, A$\rightarrow$C, B$\rightarrow$C

(c)

A$\rightarrow$B, A$\leftarrow$C, B$\rightarrow$C

(d)

A$\leftarrow$B, A$\rightarrow$C, B$\leftarrow$C

3. 3 x 1 = 3
4. Hotness or coldness of an object is called _____

()

Temperature

5. The process of heat transfer directly from molecule to molecule is called ______

()

conduction

6. Transfer of energy between any two objects due to difference in temperature is called _____

()

Thermal (or) heat energy

7. 4 x 1 = 4
8. Superficial expansion

9. (1)

hot body to cold body

10. Cubical expansion

11. (2)

change in volume

12. Heat transformation

13. (3)

change in area

14. Boltzmann constant

15. (4)

1.381 x 10-23 JK-l

3 x 2 = 6
16. Distinguish between ideal gas and real gas.

17. What is co-efficient of real expansion?

18. What is co-efficient of apparant expansion?

19. 2 x 4 = 8
20. With an illustration, explain the method of Calculation for linear expansion of an object.

21. With an illustration, explain the method of Calculation for cubical expansion of an object.

22. 1 x 7 = 7
23. Derive the ideal gas equation.