engineering physics MCQ #5237

A crystal has a coefficient of thermal expansion of 10^(-5) K^(-1). What is the change in lattice constant if the temperature changes by 100 K?

engineering physics MCQ #5237

  1. Question 1

    Q1. A crystal has a coefficient of thermal expansion of 10^(-5) K^(-1). What is the change in lattice constant if the temperature changes by 100 K?

    • A) 0.1%
    • B) 0.2%
    • C) 0.05%
    • D) 0.01%

    Answer: 0.1%

    Explanation: Using Δa / a = α * ΔT, we get Δa / a = 10^(-5) * 100 = 0.1%.