Find the stress developed inside a tooth cavity filled with copper when hot tea at…

Physics · Class 11 · CBSE — Mechanical Properties of Solids

Find the stress developed inside a tooth cavity filled with copper when hot tea at temperature of 57°C is drunk. (Take temperature of tooth to be 37 °C, a = 1.7 × 10–5 °C–1 and bulk modulus for copper = 140 × 109 N m–2)
  1. 1.43 × 108 N m–2
  2. 4.13 × 108 N m–2
  3. 2.12 × 104 N m–2
  4. 3.12 × 104 N m–2

Answer

(A) 1.43 × 10 8 N m –2

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