Multiple choice

A metal bar of length 100 mm is inserted between two rigid supports and its temperature is increased by 10°C. If the coefficient of thermal expansion is 12 x 10–6 per °C and the Young’s modulus is 2 x 105 MPa, the stress in the bar is

  1. zero

  2. 12 MPa

  3. 24 MPa

  4. 2400 MPa

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation