Question

When temperature increases, the frequency of a tuning fork :

• A. increases
• B. decreases
• C. remains same
• D. increases or decreases depending on the material

Answer 1

Answer: (B)

decreases

Answer 2

As, $f=\frac{1}{2 l} \sqrt{\frac{T}{m}}$ When temperature increases, then length increases and frequency $\left(f \propto \frac{1}{l}\right)$ decreases.