Physics 0625 · IGCSE · Physical quantities and measurement techniques

Physical quantities and measurement techniques — practice question

When the jaws are completely closed, a micrometer screw gauge shows $0.02\,\text{mm}$. When it is used to measure a metal wire, the reading is $0.56\,\text{mm}$. What is the wire’s diameter?

  • A$0.36\,\text{mm}$
  • B$0.54\,\text{mm}$
  • C$0.56\,\text{mm}$
  • D$0.58\,\text{mm}$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI