Q70 / 90 · JEE Main 2024 (01 Feb Shift 1) · Physics

With rise in temperature, the Young's modulus of elasticity

  • A
    changes erratically
  • Correct answer
    B
    decreases
  • C
    increases
  • D
    remains unchanged

Solution

With rise in temperature, Young’s modulus of  elasticity decreases due to the increase in atomic 
vibrations which leads to decrease in atomic forces. The Young's modulus is a measure of stiffness of the material. With rise in temperature, the length of the material increases which decreases its stiffness.

Hence, the correct answer is option: 'B'.

Relevant Questions