Physics (AS & A Level) · May / June 2025 · Paper 11 · Question 23
A uniform metal wire of length $L$ and diameter $d$ has spring constant $k$. What is the Young modulus of the metal?
- A$\dfrac{\pi d^2}{4kL}$
- B$\dfrac{\pi d^2}{kL}$
- C$\dfrac{kL}{\pi d^2}$
- D$\dfrac{4kL}{\pi d^2}$
As printed in the paper
Show the answer
Correct answer: D. $\dfrac{4kL}{\pi d^2}$
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.