Page 146 - Physics - XII

Appendix - IV :
Appendix - IV : Some Useful TablesSome Useful Tables

Table 1. E.M.F. of Cells in Volts
S. No. Cell E.M.F. S. No. Cell E.M.F.
1. Daniell 1.08–1.09 6. Cadmium at 20°C 1.01854
2. Grove 1.8–1.9 7. Lead accumulator 1.9–2.2
3. Lechlanche 1.45 8. Edison cell 1.45
4. Voltaic 1.01 9. Clarke 1.43
5. Bunsen 1.95 10. Ni-Fe 1.20
Table 2. Refractive Index of Substances (For sodium light λ = 5896 × 10 m)
–10
S. No. Solid Refractive Index S. No. Liquid Refractive Index
1. Diamond 2.417 11. Canada balsam 1.53
2. Glass (crown) 1.48–1.61 12. Water 1.333
3. Glass (fl int) 1.53–1.96 13. Alcohol (ethyl) 1.362
4. Glass (soda) 1.50 14. Aniline 1.595
5. Ice 1.31 15. Benzene 1.501
6. Mica 1.56–1.60 16. Cedar oil 1.516
7. Rock-salt 1.54 17. Chloroform 1.450
8. Quartz (O-Ray) 1.5443 18. Ether 1.350
9. Quartz (E-Ray) 1.5534 19. Glycerine 1.47
10. Quartz (fused) 1.458 20. Olive oil 1.46
21. Paraffi n oil 1.44
22. Kerosene oil 1.39
23. Turpentine oil 1.44

Table 3. Elastic Constants

Young's modulus, Rigidity modulus, Bulk modulus, Breaking Stress
S. No. Substance
Y (Nm ) × 10 10 (Nm ) × 10 10 K (Nm ) × 10 10 (kg/mm )
–2
2
–2
–2
1. Copper 11.0–12.55 3.4–3.61 13.0–14.33 40 to 45
2. Brass 9.0–10.2 3.5–3.37 6.0–6.2 30 to 50
3. Iron (cast) 10–12.8 5.5–5.1 9.5–9.7 –
4. Iron (wrought) 19–21.2 7.7–8.5 14.6–16.1 –
5. Steel 19–21.2 7.4–7.6 16.5–17.8 40 to 45
6. Lead 1.6 0.6 4.5 –
7. Zinc 8–10.7 3.6–3.76 3.0–6.2 –
8. Aluminium 7.0 2.5 7.5 20 to 25
9. Constantan 16.32 6.15 15.57 –
10. German silver 11.0 4.53 15.03 –
11. Manganin 12.5 4.65 12.17 –
12. Quartz 5.4 3.0 – –
13. Rubber 0.05 – – –
14 Silver 7.1–7.4 2.5–3.0 – 40 to 45

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