Illustrate the stress and strain of solids.
2. What do you mean by the Young’s modulus for steel is 𝒀 = 𝟐. 𝟎 × 𝟏𝟎𝟏𝟏 𝑵𝒎−𝟐
? Explain
briefly.
3. Gold has a face centered cubic unit cell and has the density 𝟏𝟗. 𝟑 𝒈 𝒄𝒎−𝟑
. Calculate the
length along an edge. (𝐴𝑢 = 197 𝑔 𝑚𝑜𝑙
−1
)
4. Write down five real life applications of surface tension.
5. A capillary tube with an inside diameter of 𝟓𝟒𝟎 𝝁𝒎 can support a 𝟏𝟎𝟎 𝒎𝒎 column of liquid
that has a density of 𝟏𝟑𝟓𝟎𝟎 𝒌𝒈𝒎−𝟑
. If 𝒉 = 𝟎. 𝟏 then is it possible to find the surface tension
of the liquid? If not, then write down the reason.
6. Write a short note on polymer materials and amorphous solid.
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